Why are many second-hand houses thrown out in Hanzhong District, Shanghai?

It's getting harder and harder to buy a house with a loan. Hanzhong Community is located in Jing 'an District, Shanghai, and was built in 1994. The residential property is Shanghai Shenghua Property Co., Ltd. It is getting more and more difficult to buy a house with a loan, which leads to a large number of second-hand houses selling. The central bank stipulates that the upper limit of personal loans of banks shall not exceed 30% of new loans and development loans shall not exceed 40% of new loans. At the same time, the central bank also banned bridge loan, consumer loans and commercial loans from flowing to the real estate market.