I'm under the impression that there aren't enough RMB-denominated bonds on the market right now, hence why PBOC and MOC recently suggested Chinese banks make more RMB loans overseas. Chinese Treasury bonds cannot be the solution to this problem anyways as this would put China in the same position as the US gov which has to run a constant deficit.What can these countries do with excess RMB?Simple,exactly the same way countries do with excess dollars. Buy Chinese Treasury bond,and invest in China.