[InKunming--Kunming]  Photo taken on May 15, 2015 shows a tea pet, a traditional craft in tea art, during the 10th China Yunnan Pu'er Tea Expo in Kunming, capital of southwest China's Yunnan Province. The four-day tea expo, kicked off in Kunming on Friday, attracting over 400 tea companies. (Xinhua/Lyu Shuai)

A visitor views a demonstration of tea-making during the 10th China Yunnan Pu'er Tea Expo in Kunming, capital of southwest China's Yunnan Province, May 15, 2015. The four-day tea expo, kicked off in Kunming on Friday, attracting over 400 tea companies. (Xinhua/Lyu Shuai)

A staff member demonstrates tea art during the 10th China Yunnan Pu'er Tea Expo in Kunming, capital of southwest China's Yunnan Province, May 15, 2015. The four-day tea expo, kicked off in Kunming on Friday, attracting over 400 tea companies. (Xinhua/Lyu Shuai)

Visitors choose tea sets during the 10th China Yunnan Pu'er Tea Expo in Kunming, capital of southwest China's Yunnan Province, May 15, 2015. The four-day tea expo, kicked off in Kunming on Friday, attracting over 400 tea companies. (Xinhua/Lyu Shuai)

A girl experiences tea art during the 10th China Yunnan Pu'er Tea Expo in Kunming, capital of southwest China's Yunnan Province, May 15, 2015. The four-day tea expo, kicked off in Kunming on Friday, attracting over 400 tea companies. (Xinhua/Lyu Shuai)