According to Baidu Encyclopedia, prescription notes, Chinese characters and pinyin are all chǔfāngjiān, which means the list of drugs prescribed to patients by doctors after diagnosis. Among them, "Jane" is a Chinese vocabulary, and the Chinese pinyin is jiān, which refers to bamboo sticks. There was no paper in ancient times, and it was marked with a simple strategy. Bamboo is cut into small pieces of paper and tied with simplicity. Notes can also refer to letters written to the emperor in ancient China, such as the memorial; Answer Dong and Wang Jian, etc.