I'm not talking about ethnicity, I mean neither of us live in China. Neither of us can hold them accountable. If you mean what problems China is working on that I consider to be pressing, there's the rural/urban development gap, the continuing improvement and struggle for better queer rights, the importance of electrification and energy independence, and more.
I don't frame this as "lacking," because again, China is the fastest developing and improving country in history, and all of these areas are being actively worked on. They are not regressing. They still have areas to improve, but framing them as "lacking" implies a regression.