The 50 Cent Party, also known as the 50 Cent Army or wumao (/ˈwuːmaʊ/; from Chinese: 五毛; lit. ‘five dimes’), are Internet commentators who are paid by the authorities of the People’s Republic of China to spread the propaganda of the governing Chinese Communist Party (CCP). The program was created during the early phases of the Internet’s rollout to the wider public in China.
*Edit: typo
One thing that’s good to keep in mind when engaging with discourse on the internet of Chinese origin is that it’s very likely that accessing the platform it’s on is illegal in China. Then the question becomes “how come they can post?” And from that you can draw your own conclusions.
The same goes for Chinese content creators on Youtube, or any service that is illegal in China.