From what I've read about Chinese leadership, it's incorrect to label Xi as "in charge", at least if you mean in a dictatorial fashion. The CCP seems to run by the consensus of top party leaders. Xi certainly has more authority/sway than the rest, but I doubt he's making all of the decisions alone.
Like every organization there is a need to maintain good relationship with others. This means you have to make compromise and make deal. This means people aren't always 100% in charge. You can choose to do things against the will of some powerful enemy, and you will face the consequence. So Xi can make all the decisions here. He can say "I want this to be done" and his officials will carry out. At this very moment, Xi is absolutely in charge of everything, especially given his popularity.
