A foreign visitor poses for photos with a Chinese car during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

An exhibitor (2nd L) introduces African products to visitors during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

A foreign visitor (R) tries his hands with Chinese kung fu during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

An exhibitor (L) introduces African products to visitors during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

A foreign visitor (L) learns about a Chinese electric vehicle (EV) charging station during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

Visitors are seen during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Zhenhai)

Visitors are seen during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Zhenhai)

An exhibitor (L) communicates with visitors during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

A foreign visitor tries a Chinese motorbike during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

A foreign visitor (R) communicates with an exhibitor during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)

An exhibitor (R) introduces African products to visitors during the fourth China-Africa Economic and Trade Expo at Changsha International Convention and Exhibition Center in Changsha, central China's Hunan Province, June 13, 2025. The expo had its curtain lifted here on Thursday, and remains open to the general public from June 13 to 15. (Xinhua/Chen Sihan)