记住：永远不要在MySQL中使用“utf8”，请使用“utf8mb4” utf8mb4_general_ci
cursor.execute("SET character_set_connection=utf8mb4") # pymysql
MySql set varchar to utf8mb4https://zhuanlan.zhihu.com/p/73402380
https://blog.csdn.net/qq_17555933/article/details/101445526
禁用win10 office快捷键，恼人的 https://www.office.com/?from=OfficeKey
REG ADD HKCU\Software\Classes\ms-officeapp\Shell\Open\Command /t REG_SZ /d rundll32
Admin 权限运行
OneDrive总是同步TIM QQ产生的垃圾文件。需要更改不保存在“我的文档”。TIM的设定不起作用，害我以为自己老年痴呆了，浪费了俩小时才搞定。
REM C:\Users\Public\Documents\Tencent\QQ\UserDataInfo.ini
[UserDataImportSet]
NeedImport=0
OldVersion=
OldVerDataPathType=
OldVerDataPath=
OldQQInstallPath=C:\Program Files (x86)\Tencent\TIM
[UserDataSet]
UserDataSavePathType=2
UserDataSavePath=D:\Dan\Tencent\TIM
NewVersion=
net user dan /times:M-F,07:00-13:00;M-F,18:00-22:00;Sa-Su,07:00-22:00
REM 只支持整点，不能精确到分钟
net user USERACCOUNT /times:all
REM 需呀配合计划任务定时锁定电脑，否则默认继续使用。
REM mshta vbscript:msgbox("电脑即将被锁定")(window.close)
rundll32.Exe user32.dll LockWorkStation# SoftEther config, disable SecureNAT, create bridge "soft"
./vpnserver/vpnserver start
ifconfig tap_soft 192.168.30.1
# echo 1 >> /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -s 192.168.30.0/24 -o ens3 -j MASQUERADE
nano /etc/sysctl.conf # net.ipv4.ip_forward = 1
sysctl -p
./vpnserver/vpnserver stop; ./vpnserver/vpnserver start # enable tap_soft agagin
# https://hub.docker.com/r/cenk1cenk2/softether-vpnsrv