propaganda trolls hired by CCP(Chinese communist party) to promote narratives in favor of CCP. For example, wumao will comment "Xi is the best leader ever".
Wumao (五毛) are Chinese tankie shitposters who get paid by the CCP to spread pro ChiCom propaganda on the internet. Wumao is Chinese for "50 cents", referring to the fact that they are part of the 50 Cent Party and get paid ¥0.50 for every pro ChiCom shitpost they make.