Lao Liu is a popular internet meme. It has two meanings. One refers to people who play dirty games and play all kinds of dirty tricks. The other refers to people who have unique ideas. This word has a derogatory connotation. Generally used to describe players in games, and later extended to life.
It mainly refers to some special players in the game, players who often travel abroad.
Or they are players whose gameplay is rather obscene, who likes to play dirty tricks and hide themselves from others.

This meme originally came from shooting games such as PlayerUnknown's Battlegrounds and CSGO. People like to hide and attack during battles.
Many players now also like to use this title to call players with poor gaming skills.
