The earliest record of tea in ancient books in China.

The origin of the word "tea" was first seen in China's book Shennong Materia Medica, which is the oldest first medical book in the world. According to relevant experts' research, this book was written in the Warring States Period (5 BC-22 BC1year).

Lu Yu, from the first to the Tang Dynasty in Cha Sheng, China, wrote the world's earliest tea monograph "Tea Classic" around 758 AD, systematically and comprehensively discussing the methods and experiences of tea planting, tea making, tea drinking and tea tasting. According to Lu Yu's Tea Classic, tea trees have been discovered and used in China for more than 4,700 years.