China’s foreign policy model seems focused on making deals with the existing power no matter what. Part of that seems to be that China does not believe in odious debt like a lot of Western countries do. When settling debts, Chinese institutions have been far more insistent on keeping write-offs from occuring.
China has also generally pushed for more one on one transactional deals with countries. There have been some international institutions made like the AIIB, but I don’t see the institutional creation of systems like the USA tried to do.
A lot of times, the IMF will lead all creditors of a country to restructure, reduce, or reschedule existing debt. What is happening is that Chinese institutions appears to be less willing to write down bad debt, holding up a lot of negotiations between debt holders. So, the debt doesn’t get reduced.