[China-home of the tea drinking custom]

This paper summarizes how Gambir entered China. While the author attempts to explain how Gambir was replaced by tea in the area, there still appear to be many missing links, to which the author would like to welcome constructive criticism. Lao-cai on the China-Vietnam border, where Acacia pads were produced up to the 16th century, can be read as Rakuju . A tribe that belongs to Hani in northern Laos also consumes these Acacia pads. It was Li Jichin who called tea Lau-nu. This was based on a historical fact that Oh Shuku pointed out to Emperor Kobun in the 5th century in Northern Wei that calling tea a slave of lactic products could not be considered appropriate.