Generally, five emperors' money is put, and superstition says that it is a town ghost. The geomantic omen in the cemetery is a big pattern. It's useless to bury five emperors' money, and the copper coins are almost rotten. Five emperors copper coins are more suitable for hanging at home. The custom of putting money on graves has a long history, and there are usually two kinds of paper money and copper money. The main meaning is to entrust the memory of predecessors to future generations. For the record, this answer is for reference only. Please don't be blind and superstitious.
Five Emperors' Money generally refers to the China Permanent Cemetery of Five Emperors' Money in Qing Dynasty, which is the ancient money cast by the five most prosperous emperors in Qing Dynasty (Shunzhi, Kangxi, Yongzheng, Qianlong and Jiaqing). These five emperors were in power for 180 years, which was the most glorious period of the Qing Dynasty. During their reign, their national strength was strong and there was a famous prosperity in history.