What's the meaning of the movie lines in Friends Icehouse?

The lines in the movie "Friends in the Ice Room" refer to people who befriend at will for no reason. A good friend's icehouse comes from the movie When is the Moon? After Liu Heizai, a hero of Dongjiang River, accidentally met a traitor, he pretended to be stupid and made friends, so his good friend's ice room was used to play tricks on those who made friends at random without rhyme or reason.