The truth is that we really can't believe the economic data that is coming out of China. China is notorious for falsifying their numbers for just about anything and everything, not to say that most other nations don't do the same to an extent, but being that it's such a tightly ran nation that doesn't allow for much of "outside eyes" looking in, it's very hard for anyone to prove whatever they are reporting as factual or not. Just looking a a communistic dictatorship governmental set-up standpoint...hard to trust them
That's one of the problems - the insularity of the real data on the Chinese economy. If we, for example, can roughly calculate the volume of foreign trade by secondary data (from importers and exporters of China), the internal "kitchen" is closed from the whole world. For example, there is absolutely no information about the real stock of foreign exchange reserves. Yes, we can, for example, know from the U.S. side how much China buys U.S. government bonds, but... that's ALL, the rest of the information is not verifiable and is not available not only to the outside world but also inside China. Therefore, it is possible that the strength of the Chinese economy is...to put it mildly, far from the public picture.
Even if i try to agree a little bit with your assertion, china has been giving out loans to various countries across the globe, there infrastructural and construction company are all over Africa, and they are doing very well with their productivity. China might try to hide some statistics about the internal infractions about their country, but having a country with over a billion people and they are not in extreme poverty situation, then trust me, china is doing well.
