Some people online deliberately fan the flames to create conflict.
Tips
usage
Originally dialectal, now common online slang for trolls or commentators who escalate disputes. Often used in geopolitical commentary too: 某国在拱火 = 'a certain country is fanning the flames.'
memory
拱 (gǒng) means 'to push up with hands cupped', picture cupping hands around a fire to feed it more air. That's literally 拱火.
