The Good Emperor Problem

For a 20 year period en the chinese had a couple of rounds where there was no real emperor, where power was shared collectively among a group of pretty senior communist party leaders. They agreed amongst themselves to do ten year terms and then rotate and step down. Then came shijin ping who, on the one hand, has made real strides against the corruption problem thereby legitimating the power of the communist party. But obviously, when you're that much of a dictator, you do run into the bad emperor problem, right? What if someone in his positionntdin't do? Well, it seems at least possible to me that they could rotate between these models - but i don't think