The argument about the appearance of "finger tapping ceremony" is mostly related to the Qianlong emperor in the Qing Dynasty. According to legend, Emperor Qianlong went down to the south of the Yangtze River, got caught in the rain through a tea area and rested in a roadside shop. The bartender didn't know Emperor Qianlong, so he made a pot of tea and put it on the table. Gan uplift pours tea as an entourage. The emperor offered tea to his entourage, and the entourage thanked him, but it was not convenient to reveal the identity of the emperor. In desperation, the entourage bent two fingers and kept knocking on the table, indicating that he would kowtow again and again. From then on, when drinking tea, I used my two fingers to express my gratitude to the tea pourer, which has been used ever since.