The tea in Huiqun Guili is Pu 'an red big leaf black tea. This kind of tea is produced in Pu 'an County, Guizhou Province, and it is one of the earliest tea tree birthplaces in China. There are more than 20,000 four-ball ancient tea trees in Pu 'an County, and the earliest ancient tea trees are more than 4,800 years old. Pu 'an red and big leaf black tea is compact in shape, fragrant in flowers and honey, and golden and transparent in soup color.