Workers process poria products at a poria processing plant of Feilin Group in Loudima, Bouenza Department, the Republic of the Congo, Aug. 31, 2026. The first batch of poria products from the Republic of Congo benefiting from China's zero-tariff treatment began its journey to China on Tuesday. (Xinhua/Zheng Yangzi)

A worker digs up poria in a pine forest in Loudima, Bouenza Department, the Republic of the Congo, Sept. 1, 2026. The first batch of poria products from the Republic of Congo benefiting from China's zero-tariff treatment began its journey to China on Tuesday. (Xinhua/Zheng Yangzi)

This photo taken on Sept. 1, 2026 shows a poria cultivation site in a pine forest in Loudima, Bouenza Department, the Republic of the Congo. The first batch of poria products from the Republic of Congo benefiting from China's zero-tariff treatment began its journey to China on Tuesday. (Xinhua/Zheng Yangzi)

Workers pack poria products for shipment to China at a poria processing plant of Feilin Group in Loudima, Bouenza Department, the Republic of the Congo, Aug. 31, 2026. The first batch of poria products from the Republic of Congo benefiting from China's zero-tariff treatment began its journey to China on Tuesday. (Xinhua/Zheng Yangzi)

A ceremony marking the shipment of the first batch of poria products from the Republic of the Congo to China under China's zero-tariff treatment is held at a poria processing plant of Feilin Group in Loudima, Bouenza Department, the Republic of the Congo, Sept. 1, 2026. The first batch of poria products from the Republic of Congo benefiting from China's zero-tariff treatment began its journey to China on Tuesday. (Xinhua/Zheng Yangzi)