Proof, right a experiment

[Michaelvep]

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https://bbs.pku.edu.cn/v2/jump-to.php?u ... rt-1-88829
http://ezproxy.cityu.edu.hk/login?url=h ... stud-48030
http://ezproxy.cityu.edu.hk/login?url=h ... bour-40010
https://bbs.pku.edu.cn/v2/jump-to.php?u ... osts-12927
http://ezproxy.cityu.edu.hk/login?url=h ... -sex-55517
https://bbs.pku.edu.cn/v2/jump-to.php?u ... rt-4-72785
http://ezproxy.cityu.edu.hk/login?url=h ... ener-46269
http://ezproxy.cityu.edu.hk/login?url=h ... ress-48217
https://bbs.pku.edu.cn/v2/jump-to.php?u ... rt-4-54356
https://bbs.pku.edu.cn/v2/jump-to.php?u ... ud-3-20105