By the way, how old is Cheng?

At first, I thought it was a provincial or ministerial official, but I can see that there are guards patrolling in people's yards, and they are still in teams. Provincial officials should not have this treatment, and they should be officials of the central government. They should be officials in CPC Central Commission for Discipline Inspection. In later episodes, he often said that he was anti-corruption and signed it himself. I guess it's the secretary of the Central Commission for Discipline Inspection.