Photo taken on May 1, 2022 shows a container vessel docking at the Qianwan Container Terminal in Qingdao, east China's Shandong Province. East China's Shandong Province posted a 14.2 percent year-on-year increase in its foreign trade in the first four months of 2022, Qingdao Customs said on Thursday. (Xinhua/Li Ziheng)

Photo taken on May 1, 2022 shows a container vessel docking at the Qianwan Container Terminal in Qingdao, east China's Shandong Province. East China's Shandong Province posted a 14.2 percent year-on-year increase in its foreign trade in the first four months of 2022, Qingdao Customs said on Thursday. (Xinhua/Li Ziheng)

Photo taken on May 1, 2022 shows a container vessel docking at the Qianwan Container Terminal in Qingdao, east China's Shandong Province. East China's Shandong Province posted a 14.2 percent year-on-year increase in its foreign trade in the first four months of 2022, Qingdao Customs said on Thursday. (Xinhua/Li Ziheng)

Photo taken on May 1, 2022 shows a container vessel docking at the Qianwan Container Terminal in Qingdao, east China's Shandong Province. East China's Shandong Province posted a 14.2 percent year-on-year increase in its foreign trade in the first four months of 2022, Qingdao Customs said on Thursday. (Xinhua/Li Ziheng)