If they are tied to money generating projects then they would have already done the bonds with USD years ago. Why wait until now?Not necessarily if the bonds are tie to money generating projects like lithium mines.
Of course if that's true, Argentine will find plenty of people willing to give it money
You are falling into the US trap of money printing I think. Yes, money printing in the way you described would be useful. But the problem is how can China ensure that they are actually building their country and not just messing around?At the end of the day People’s Bank of China can create RMB out of thin air and give them to other countries. The Chinese government can use the money to build up other countries’ economies and strengthen China’s relationship with them while keeping Chinese people employed.
Infrastructure funding is useful but Argentine's biggest economic problems are ultimately policy driven. China with its "no interference in domestic affairs" policy can't affect that
The only thing it can do is to ensure that the RMB Argentine gets from China (currency swap deal) are used in a good way. Nuclear reactors, electricity generation, ports and railways development/modernisation, digital development