第六章与其让你了解我，我宁愿我是一个谜

书名：从开始到爱你作者：叶紫字数：0 更新时间：08-06 21:10

通道请求出错

关于我们

用户协议

隐私政策

联系我们

服务时间:周一至周日 9:00--18:00
(不同产品服务时间会有所区别，具体以购买时的服务承诺为准)
在线服务: 微信关注公众号
人工服务时间:周一至周日早9点-晚18点，如果您有任务问题，可以联系我们！举报反馈：点此进入

基本文件流程错误 SQL 调试

/www/wwwroot/kxs/public/index.php ( 0.49 KB )
/www/wwwroot/kxs/vendor/autoload.php ( 0.75 KB )
/www/wwwroot/kxs/vendor/composer/autoload_real.php ( 1.63 KB )
/www/wwwroot/kxs/vendor/composer/platform_check.php ( 0.90 KB )
/www/wwwroot/kxs/vendor/composer/ClassLoader.php ( 16.14 KB )
/www/wwwroot/kxs/vendor/composer/autoload_static.php ( 15.91 KB )
/www/wwwroot/kxs/vendor/symfony/deprecation-contracts/function.php ( 0.99 KB )
/www/wwwroot/kxs/vendor/topthink/think-helper/src/helper.php ( 7.35 KB )
/www/wwwroot/kxs/vendor/ralouphie/getallheaders/src/getallheaders.php ( 1.60 KB )
/www/wwwroot/kxs/vendor/symfony/polyfill-mbstring/bootstrap.php ( 7.33 KB )
/www/wwwroot/kxs/vendor/symfony/polyfill-mbstring/bootstrap80.php ( 8.84 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/stubs/load_stubs.php ( 0.16 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Exception.php ( 1.69 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Facade.php ( 2.71 KB )
/www/wwwroot/kxs/vendor/guzzlehttp/promises/src/functions_include.php ( 0.16 KB )
/www/wwwroot/kxs/vendor/guzzlehttp/promises/src/functions.php ( 9.89 KB )
/www/wwwroot/kxs/vendor/guzzlehttp/guzzle/src/functions_include.php ( 0.16 KB )
/www/wwwroot/kxs/vendor/guzzlehttp/guzzle/src/functions.php ( 5.55 KB )
/www/wwwroot/kxs/vendor/symfony/polyfill-php80/bootstrap.php ( 1.50 KB )
/www/wwwroot/kxs/vendor/yansongda/supports/src/Functions.php ( 1.53 KB )
/www/wwwroot/kxs/vendor/hyperf/engine/src/Functions.php ( 0.83 KB )
/www/wwwroot/kxs/vendor/myclabs/deep-copy/src/DeepCopy/deep_copy.php ( 0.39 KB )
/www/wwwroot/kxs/vendor/overtrue/socialite/src/Contracts/FactoryInterface.php ( 0.47 KB )
/www/wwwroot/kxs/vendor/overtrue/socialite/src/Contracts/UserInterface.php ( 1.04 KB )
/www/wwwroot/kxs/vendor/overtrue/socialite/src/Contracts/ProviderInterface.php ( 2.89 KB )
/www/wwwroot/kxs/vendor/yansongda/artful/src/Functions.php ( 2.38 KB )
/www/wwwroot/kxs/vendor/ezyang/htmlpurifier/library/HTMLPurifier.composer.php ( 0.10 KB )
/www/wwwroot/kxs/vendor/mpdf/mpdf/src/functions.php ( 0.51 KB )
/www/wwwroot/kxs/vendor/symfony/var-dumper/Resources/functions/dump.php ( 0.97 KB )
/www/wwwroot/kxs/vendor/topthink/think-captcha/src/helper.php ( 1.37 KB )
/www/wwwroot/kxs/vendor/w7corp/easywechat/src/Kernel/Support/Helpers.php ( 2.63 KB )
/www/wwwroot/kxs/vendor/w7corp/easywechat/src/Kernel/Helpers.php ( 1.89 KB )
/www/wwwroot/kxs/vendor/yansongda/pay/src/Functions.php ( 19.32 KB )
/www/wwwroot/kxs/vendor/zzstudio/think-addons/src/helper.php ( 4.77 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Console.php ( 22.65 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/App.php ( 14.17 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Container.php ( 15.38 KB )
/www/wwwroot/kxs/vendor/psr/container/src/ContainerInterface.php ( 1.02 KB )
/www/wwwroot/kxs/app/provider.php ( 0.07 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Http.php ( 6.12 KB )
/www/wwwroot/kxs/vendor/topthink/think-helper/src/helper/Str.php ( 7.28 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Env.php ( 4.64 KB )
/www/wwwroot/kxs/app/common.php ( 64.28 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/helper.php ( 18.44 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Config.php ( 5.03 KB )
/www/wwwroot/kxs/config/addons.php ( 0.69 KB )
/www/wwwroot/kxs/config/app.php ( 2.41 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Env.php ( 1.67 KB )
/www/wwwroot/kxs/config/cache.php ( 1.73 KB )
/www/wwwroot/kxs/config/captcha.php ( 1.02 KB )
/www/wwwroot/kxs/config/console.php ( 0.62 KB )
/www/wwwroot/kxs/config/cookie.php ( 0.49 KB )
/www/wwwroot/kxs/config/database.php ( 2.04 KB )
/www/wwwroot/kxs/config/filesystem.php ( 0.66 KB )
/www/wwwroot/kxs/config/jump.php ( 0.36 KB )
/www/wwwroot/kxs/config/lang.php ( 0.81 KB )
/www/wwwroot/kxs/config/log.php ( 2.50 KB )
/www/wwwroot/kxs/config/middleware.php ( 0.19 KB )
/www/wwwroot/kxs/config/route.php ( 1.54 KB )
/www/wwwroot/kxs/config/session.php ( 0.99 KB )
/www/wwwroot/kxs/config/theme.php ( 0.12 KB )
/www/wwwroot/kxs/config/trace.php ( 0.34 KB )
/www/wwwroot/kxs/config/upgrade.php ( 0.11 KB )
/www/wwwroot/kxs/config/view.php ( 1.14 KB )
/www/wwwroot/kxs/config/wechat.php ( 2.50 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Route.php ( 4.88 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Route.php ( 23.96 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/RuleName.php ( 5.33 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/Domain.php ( 5.55 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/RuleGroup.php ( 13.61 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/Rule.php ( 22.85 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/RuleItem.php ( 8.81 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/Url.php ( 14.66 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Request.php ( 54.04 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Lang.php ( 7.60 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/lang/zh-cn.php ( 12.88 KB )
/www/wwwroot/kxs/app/lang/zh-cn.php ( 4.27 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Event.php ( 6.96 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/initializer/Error.php ( 3.27 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/initializer/RegisterService.php ( 1.33 KB )
/www/wwwroot/kxs/vendor/services.php ( 0.25 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/service/PaginatorService.php ( 1.52 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Service.php ( 1.67 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/service/ValidateService.php ( 0.99 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/service/ModelService.php ( 1.76 KB )
/www/wwwroot/kxs/vendor/topthink/think-captcha/src/CaptchaService.php ( 0.52 KB )
/www/wwwroot/kxs/vendor/topthink/think-multi-app/src/Service.php ( 1.05 KB )
/www/wwwroot/kxs/vendor/topthink/think-trace/src/Service.php ( 0.77 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Middleware.php ( 6.78 KB )
/www/wwwroot/kxs/vendor/zzstudio/think-addons/src/addons/Service.php ( 7.47 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Lang.php ( 1.68 KB )
/www/wwwroot/kxs/vendor/zzstudio/think-addons/src/lang/zh-cn.php ( 6.13 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Config.php ( 1.37 KB )
/www/wwwroot/kxs/vendor/zzstudio/think-addons/src/Addons.php ( 5.12 KB )
/www/wwwroot/kxs/addons/caijipro/Plugin.php ( 16.37 KB )
/www/wwwroot/kxs/addons/cover/Plugin.php ( 26.33 KB )
/www/wwwroot/kxs/addons/import/Plugin.php ( 0.49 KB )
/www/wwwroot/kxs/addons/loginbg/Plugin.php ( 1.70 KB )
/www/wwwroot/kxs/addons/smsbao/Plugin.php ( 2.72 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Cache.php ( 2.02 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Cache.php ( 4.79 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Manager.php ( 3.98 KB )
/www/wwwroot/kxs/vendor/psr/simple-cache/src/CacheInterface.php ( 4.50 KB )
/www/wwwroot/kxs/vendor/topthink/think-helper/src/helper/Arr.php ( 15.54 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/cache/driver/File.php ( 7.42 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/cache/Driver.php ( 8.06 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/contract/CacheHandlerInterface.php ( 2.25 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Event.php ( 1.79 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/initializer/BootService.php ( 0.77 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/Paginator.php ( 11.80 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Validate.php ( 46.10 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/Model.php ( 25.28 KB )
/www/wwwroot/kxs/vendor/topthink/think-helper/src/contract/Arrayable.php ( 0.09 KB )
/www/wwwroot/kxs/vendor/topthink/think-helper/src/contract/Jsonable.php ( 0.13 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/model/concern/Attribute.php ( 17.61 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/model/concern/RelationShip.php ( 26.12 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/model/concern/ModelEvent.php ( 2.27 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/model/concern/TimeStamp.php ( 5.70 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/model/concern/Conversion.php ( 10.41 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Db.php ( 2.87 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/DbManager.php ( 8.49 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Log.php ( 8.50 KB )
/www/wwwroot/kxs/vendor/psr/log/Psr/Log/LoggerInterface.php ( 3.04 KB )
/www/wwwroot/kxs/app/middleware.php ( 0.31 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Pipeline.php ( 2.61 KB )
/www/wwwroot/kxs/vendor/topthink/think-trace/src/TraceDebug.php ( 2.94 KB )
/www/wwwroot/kxs/app/middleware/CheckLang.php ( 2.15 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Cookie.php ( 1.49 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Cookie.php ( 6.28 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/middleware/SessionInit.php ( 2.06 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Session.php ( 1.80 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/session/driver/File.php ( 6.28 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/contract/SessionHandlerInterface.php ( 0.87 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/session/Store.php ( 7.26 KB )
/www/wwwroot/kxs/vendor/topthink/think-multi-app/src/MultiApp.php ( 7.07 KB )
/www/wwwroot/kxs/app/home/common.php ( 0.82 KB )
/www/wwwroot/kxs/app/home/event.php ( 0.07 KB )
/www/wwwroot/kxs/app/home/middleware.php ( 0.33 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/middleware/LoadLangPack.php ( 3.52 KB )
/www/wwwroot/kxs/app/home/middleware/Install.php ( 0.35 KB )
/www/wwwroot/kxs/app/home/middleware/Auth.php ( 0.74 KB )
/www/wwwroot/kxs/app/home/route/app.php ( 9.61 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/facade/Db.php ( 0.94 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/connector/Mysql.php ( 4.39 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/PDOConnection.php ( 52.45 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/Connection.php ( 7.67 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/ConnectionInterface.php ( 4.56 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/builder/Mysql.php ( 15.93 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/Builder.php ( 41.58 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/Query.php ( 10.64 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/BaseQuery.php ( 36.47 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/TimeFieldQuery.php ( 7.50 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/AggregateQuery.php ( 3.26 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/ModelRelationQuery.php ( 16.06 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/ResultOperation.php ( 6.29 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/Transaction.php ( 2.85 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/WhereQuery.php ( 16.22 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/JoinAndViewQuery.php ( 6.86 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/ParamsBind.php ( 3.36 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/concern/TableFieldInfo.php ( 2.51 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/log/driver/File.php ( 6.17 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/contract/LogHandlerInterface.php ( 0.86 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/log/Channel.php ( 6.54 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/event/LogRecord.php ( 0.86 KB )
/www/wwwroot/kxs/vendor/topthink/think-helper/src/Collection.php ( 16.10 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/dispatch/Controller.php ( 6.61 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/route/Dispatch.php ( 6.49 KB )
/www/wwwroot/kxs/app/home/controller/Chapter.php ( 5.02 KB )
/www/wwwroot/kxs/app/home/BaseController.php ( 10.66 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/Request.php ( 8.92 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/App.php ( 2.73 KB )
/www/wwwroot/kxs/vendor/topthink/think-multi-app/src/Url.php ( 7.70 KB )
/www/wwwroot/kxs/app/common/model/Category.php ( 2.03 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/facade/View.php ( 1.71 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/View.php ( 4.41 KB )
/www/wwwroot/kxs/vendor/topthink/think-view/src/Think.php ( 8.42 KB )
/www/wwwroot/kxs/vendor/topthink/think-template/src/Template.php ( 46.85 KB )
/www/wwwroot/kxs/vendor/topthink/think-template/src/template/driver/File.php ( 2.33 KB )
/www/wwwroot/kxs/vendor/topthink/think-orm/src/db/CacheItem.php ( 4.57 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/cache/TagSet.php ( 3.23 KB )
/www/wwwroot/kxs/extend/content/Content.php ( 13.24 KB )
/www/wwwroot/kxs/addons/caijipro/common.php ( 59.71 KB )
/www/wwwroot/kxs/app/admin/facade/ThinkAddons.php ( 0.19 KB )
/www/wwwroot/kxs/app/admin/service/ThinkAddons.php ( 15.58 KB )
/www/wwwroot/kxs/addons/caijipro/config.php ( 2.97 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/Response.php ( 8.60 KB )
/www/wwwroot/kxs/vendor/topthink/framework/src/think/response/View.php ( 3.27 KB )
/www/wwwroot/kxs/runtime/home/temp/19e9bd44ecce3d68a7719c1fcbeb45f5.php ( 21.84 KB )
/www/wwwroot/kxs/vendor/topthink/think-trace/src/Html.php ( 4.37 KB )

CONNECT:[ UseTime:0.003413s ] mysql:host=127.0.0.1;port=3306;dbname=kxs;charset=utf8mb4
SHOW FULL COLUMNS FROM `fn_route` [ RunTime:0.002953s ]
SELECT `id`,`rule`,`name`,`group` FROM `fn_route` WHERE `status` = 1 ORDER BY `id` ASC [ RunTime:0.002327s ]
SHOW FULL COLUMNS FROM `fn_category` [ RunTime:0.003574s ]
SHOW FULL COLUMNS FROM `fn_chapter` [ RunTime:0.004010s ]
SELECT `id`,`title`,`bookid`,`verify`,`status`,`chaps`,`wordnum`,`create_time` FROM `fn_chapter` WHERE `id` = 82682835 LIMIT 1 [ RunTime:0.002780s ]
SHOW FULL COLUMNS FROM `fn_chapter_content_2` [ RunTime:0.003181s ]
SELECT `info` FROM `fn_chapter_content_2` WHERE `sid` = 82682835 LIMIT 1 [ RunTime:0.002116s ]
SELECT `id`,`title`,`bookid` FROM `fn_chapter` WHERE `id` = 82682835 LIMIT 1 [ RunTime:0.002096s ]
SHOW FULL COLUMNS FROM `fn_addons_caijipro_chapter` [ RunTime:0.003103s ]
SELECT * FROM `fn_addons_caijipro_chapter` WHERE `chapterid` = 82682835 LIMIT 1 [ RunTime:0.002941s ]
SHOW FULL COLUMNS FROM `fn_addons_caijipro_rule` [ RunTime:0.003621s ]
SELECT * FROM `fn_addons_caijipro_rule` WHERE `id` = 1 LIMIT 1 [ RunTime:0.003986s ]
SELECT * FROM `fn_addons_caijipro_rule` WHERE `id` = 1 LIMIT 1 [ RunTime:0.003569s ]
UPDATE `fn_chapter` SET `wordnum` = 6 , `update_time` = 1755471490 WHERE `id` = 82682835 [ RunTime:0.005033s ]
DELETE FROM `fn_chapter_content_2` WHERE `sid` = 82682835 [ RunTime:0.002376s ]
SELECT `id`,`bookid`,`title` FROM `fn_chapter` WHERE `bookid` = 178256 AND `status` = 1 AND `verify` IN (0,1) AND `chaps` < 6 ORDER BY `chaps` DESC LIMIT 1 [ RunTime:0.004507s ]
SELECT `id`,`bookid`,`title` FROM `fn_chapter` WHERE `bookid` = 178256 AND `status` = 1 AND `verify` IN (0,1) AND `chaps` > 6 ORDER BY `chaps` ASC LIMIT 1 [ RunTime:0.002772s ]
SHOW FULL COLUMNS FROM `fn_book` [ RunTime:0.003692s ]
SELECT * FROM `fn_chapter` WHERE `id` = 82682835 LIMIT 1 [ RunTime:0.002616s ]
SELECT * FROM `fn_book` WHERE `id` = 178256 LIMIT 1 [ RunTime:0.002482s ]
SELECT `name` FROM `fn_category` WHERE `id` = 13 LIMIT 1 [ RunTime:0.002131s ]
SELECT * FROM `fn_chapter` WHERE `id` = 82682835 LIMIT 1 [ RunTime:0.002274s ]
SELECT * FROM `fn_book` WHERE `id` = 178256 LIMIT 1 [ RunTime:0.002088s ]
SELECT * FROM `fn_chapter` WHERE `id` = 82682835 LIMIT 1 [ RunTime:0.002147s ]
SELECT * FROM `fn_book` WHERE `id` = 178256 LIMIT 1 [ RunTime:0.002196s ]
SELECT `name` FROM `fn_category` WHERE `id` = 13 LIMIT 1 [ RunTime:0.002074s ]
SELECT `name` FROM `fn_category` WHERE `status` = 1 AND `id` = 13 LIMIT 1 [ RunTime:0.002295s ]
SELECT `name` FROM `fn_category` WHERE `status` = 1 AND `id` = 13 LIMIT 1 [ RunTime:0.002187s ]
SHOW FULL COLUMNS FROM `fn_links` [ RunTime:0.003986s ]
SELECT * FROM `fn_links` WHERE `status` = 1 ORDER BY `sort` DESC [ RunTime:0.003153s ]

0.045712s

从开始到爱你

第六章 与其让你了解我，我宁愿我是一个谜

第六章与其让你了解我，我宁愿我是一个谜