How to install suica app and add money to suica card? Unable to open suica app? Unable to add money to suica card?

WARNING: using default options for hash (sha256) that could be incompatible with old versions. How to fix it?

It's easy to create Windows VM with QEMU, but some organization requires TPM and Secure Boot. What should I do?

QQ解除限制看似简单, 实际要注意的点非常多. It might looks easy to unblock your QQ account, but you need to pay lots of attention to succeed.

There is so much outdated information on the Internet. This answer works for latest QEMU:

Delete email basing on date, or more complex filters.

Some chinese idiots love using non-standard charset. For example, "360 secure archive" is using EUC-CN. They are trying to force everyone to install their shits, but we can crack it.

You might be receiving millions of spamming email. Why it happens and what should I do? This article provides some information.

中国手机号码每天都会收到大量的垃圾短信, 包括商业营销, 政府宣传, 恶意推送赚钱等无意义短信. 分享自己使用的屏蔽方案.