middle and low grade. In the West Lake Longjing tea series, 3 kg of tea belongs to middle and low grade tea, and 3 kg of tea belongs to high grade tea. West Lake Longjing is one of the top ten famous teas in China, which belongs to green tea. It is produced in the mountains around Longjing Village, West Lake, Hangzhou City, Zhejiang Province, hence its name and has a history of more than 1,2 years.