All my own experience is absolutely contrary to what you are claiming below. There is no trust in China; the Chinese do not trust us, and I personally would not trust any Chinese person. It is rare that you will find some good honest friends there. The reason is that all relationship building in China is done for self-serving reasons, even among the Chinese themselves; they will always build relationships because they want something from someone else. It is a cultural pattern, and that would also explain the amount of open corruption you can experience there.

trust would come into question from time to time.