Overevaluation for Chinese banks

There are many banks in China. Recently most banks already listed in stock market with big value and are preparing for listing. If we consider their potential, they surely deserve to get great evaluation from investors. However, sometimes I feel that their evaluation of Chinese banks is too high to invest. Because they have a lot of non performance liabilities(below called 'NPL') and potential NPL. Many investors may understand their status. Specially underwriting companies know that kinds of problems in a certain, but they had hided it for making big money. In addition to it, the facilities, utilities, and process of Chinese banks are so humble. Although somebody doesn't have any credit in a bank, they can easily borrow money from that bank with good realtion with Government or the tops of that bank and general services to clients are so humble too except ICBC (industrial commercial bank of china). Specially that of BOC(Bank of China) is so so humble. Many foreign investors has misunderstood it as Chinese central bank so invest their money through BOC. Then, if BOC is not Chinese bank, surely their services would be better than before. However BOC is Chinese bank and has the perfect characteristics of most Chinese business. It means BOC nevet think small money foreign investors are not their clients any more otherwise BOC reduces its services. Somewhat weird business ways but many Chinese stick to these kinds of business ways.
Conclusively I think someday the investos for China will suffer from high evaluation. so we should evaluate Chinese company coldly and stop over-evaluating it.