Photo 1：People visit the 5th China-South Asia Expo (CSA Expo) in Kunming, capital of southwest China's Yunnan Province, June 14, 2018. The 5th CSA Expo and the 25th China Kunming import and export fair kicked off here on Thursday. (Xinhua/Zhou Lei)

Photo 2：A visitor takes photos of exhibits at the 5th China-South Asia Expo (CSA Expo) in Kunming, capital of southwest China's Yunnan Province, June 14, 2018. The 5th CSA Expo and the 25th China Kunming import and export fair kicked off here on Thursday. (Xinhua/Zhou Lei)

Photo 3：An exhibitor introduces products at the 5th China-South Asia Expo (CSA Expo) in Kunming, capital of southwest China's Yunnan Province, June 14, 2018. The 5th CSA Expo and the 25th China Kunming import and export fair kicked off here on Thursday. (Xinhua/Zhou Lei)