Visitors learn about coffee products at the Indonesian booth of the Fourth 21st Century Maritime Silk Road Exposition & 23rd Cross-Straits Fair for Economy and Trade in Fuzhou, East China's Fujian province, on May 18, 2021. [Photo/Xinhua]

Visitors learn about coffee products at the Indonesian booth of the Fourth 21st Century Maritime Silk Road Exposition & 23rd Cross-Straits Fair for Economy and Trade in Fuzhou, East China’s Fujian province, on May 18, 2021. [Photo/Xinhua]