Introduction to the city gate: In past archaeological excavations, ancient coins were unearthed from the Han tombs found in the south end of the village in Shangjiushan Village. There is the word "money spring" on the ancient coin. This coin is confirmed to be the currency of Wang Mang period of the Western Han Dynasty. It also proves that this village existed in the late Western Han Dynasty at the latest and has a history of nearly 2000 years.