2. Chen Yongxiang: Founder of Yunnan Tianyuanshan Tea Co., Ltd., master of Pu 'er tea production, known as "Chenpi Chen".
3. Liu Yongchang: Master of Pu 'er ancient tree tea, once won the title of top ten famous tea people in China and the hometown of tea culture.
4. Ding Zhengdong: the founder of Jiang (formerly known as Pu 'er tea aged old tea) Co., Ltd., the top three enterprises in China tea industry, and the master of Pu 'er tea production.
5. Li Ming: master of Pu 'er tea tasting. He holds the certificate of senior tea artist and senior tea appraiser, and has been engaged in the quality research and quality control of Pu 'er tea for a long time.