1. Install Steam from the app store
2. Add unofficial games to the bottom left corner of Steam's library (reference: https://mbd.baidu.com/newspage/data/dtlandingsuper?nid=dt_4803237008061071151 ）Select the Battle.net client and right-click on Properties ->Compatibility ->Force and Compatibility Version
3. Install ge protocol (replace "your username" in the code with your own, and keep it as ge protocol. sh to execute sudo sh ge protocol. sh): This version allows World of Warcraft to input Chinese - finally, right-click on compatibility and select this version in the second point.

sudo rm -rf /home/你的用户名/.local/share/Steam/compatibilitytools.d/
mkdir /home/你的用户名/.local/share/Steam/compatibilitytools.d/
cd /home/deck/Downloads/
wget https://down.npee.cn/?https://github.com/GloriousEggroll/proton-ge-custom/releases/download/GE-Proton9-16/GE-Proton9-16.tar.gz -O "/home/deck/Downloads/GE-Proton9-16.tar.gz" 2>&1
tar -xzf /home/deck/Downloads/GE-Proton9-16.tar.gz
mv /home/deck/Downloads/GE-Proton9-16 /home/你的用户名/.local/share/Steam/compatibilitytools.d
rm -rf /home/deck/Downloads/GE-Proton9-16/
rm -rf /home/deck/Downloads/GE-Proton9-16.tar.gz
sudo chmod -R 777 /home/你的用户名/.local/share/Steam/compatibilitytools.d/
sudo rm -rf /home/deck/SteamDeck超人/GE-Proton.sh
zenity --question --width=400
--text="SteamDeck 超人制作
兼容层已更新！需要重启才能生效！,
\n现在是否重启?"
if [ "$?" != 0 ]; then
#NOTE: This code will never be reached due to "set -e", the system will already exit for us but just incase keep this
echo "bye then! xxx"
exit 0;
fi

reboot

echo "Done."
echo "Done."

The above content is from the user @xye9008.