Group 1 - The article discusses the historical significance and evolution of tea production and consumption in China, particularly during the Ming and Qing dynasties [2][3][4] - "Dragon and Phoenix团茶" was a traditional tea form in the Song and Yuan dynasties, which was abolished by Emperor Zhu Yuanzhang of the Ming dynasty due to its complex production process [2] - The Ming dynasty saw a significant increase in the tribute tea from Wuyi Mountain, with annual tribute rising from 1,600 pounds to 2,300 pounds during the Hongwu and Longqing periods [3] - The classification of Wuyi tea into different grades such as "探春" (Tanchun) and "先春" (Xianchun) was established, with specific harvesting periods defined [2][3] - The Qing dynasty favored Pu'er tea for its health benefits, with Emperor Yongzheng particularly appreciating its stimulating effects during late-night work [4] - Administrative changes were made to enhance the management of Pu'er tea trade, including the establishment of the Pu'er Prefecture to oversee tea production and supply [4]