tree was discovered in Cheshui county of Guizhou. In 1961, a one thousand seven hundred year old, thirty two meter (105 feet) tall and more than one meter (3.3 feet) wide wild tea tree was found in the rain forest of Yunnan. This is the king of tea trees. In 1976, a 13-meter (42.3 feet) wild tea tree was found on Daozhen county, on a mountain at 1400 meter (4600 feet) elevation. More wild tea trees were found in the mountains of Sichuan, Yunnan, and Guizhou provincies, many of them more than ten meters tall. Etymology Tea was called 'tu' (荼) (in the Chinese ancient classic Shi Jing (The book of Songs)). Tea was also called 'jia' (檟) in the ancient Chinese classic Er Ya compiled during the early Han dynasty: " Jia is bitter tu". The word tu was further annotated by a Jin scholar, Guo Pu (276–324 CE): "Tu is a small plant, its leaves can be brewed into a beverage". Tea was also called "She' (蔎) in a West Han monograph on dialect: Fang Yian. During the Han dynasty, the word tu took on a new pronunciation, 'cha', in addition to its old pronunciation 'tu'. The syllable 'tu' (荼) later developed into 'te' in the Fujian dialect, and later 'tea', 'te'. The syllable 'she' (蔎) later became 'soh' in Jiangsu province, Suleiman's 'Sakh' also came from 'she'. The syllable "jia' (檟) later became 'cha' and 'chai' (Russia, India). During the Sui and Tang dynasties, drinking tea became a widespread custom, then spread west to Tibet. The first use of the word 'cha' instead of 'tu' for tea was in Lu Yu's Cha Jing, The Classic of Tea of 760 CE. Periods in the history of tea From prehistoric time to Spring and Autumn period (221 BCE) Tea was used as a sacrifice for ceremonies. According to the Chinese historical record, c. 1000 BCE, there were already tea farms in Sichuan and Yunnan. From the end of the Spring and Autumn period in the Early Western Han dynasty tea was used as a table vegetable food. In the historical text of "Yianzhi Chunchiu": the prime minister of Chi (547 BCE–490 BCE) had egg and tea as food on his table. Xia Zhong's Treatise on Food:: "Since Jin dynasty, the people of Wu (now Suzhou city) cooked tea leaves as food, and called it tea broth". From the beginning