The first one in Jiangnan, known for its clean culture, is actually a large family settlement built by the Zheng clans along the stream in previous generations. It coincides with the Zheng's sacrifice of ancestors. It is said that more than 3,000 Zheng clans have returned to Zhengzhai, and a market and a big play have been arranged. There should be not many people on weekdays. The shops along the stream are old houses with brick and wooden structures, which are basically run by the residents themselves. It is very pleasant to stroll around.