Photo taken on Sept.17, 2019 shows workers unloading paper pulp from Tian Xi vessel at Qingdao Port in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Crews of Tian Xi vessel line up during a welcome ceremony at Qingdao Port in Qingdao, east China's Shandong Province, Sept.17, 2019. (Xinhua/Li Ziheng)

Photo taken on Sept.17, 2019 shows workers unloading paper pulp from Tian Xi vessel at Qingdao Port in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Photo taken on Sept.17, 2019 shows paper pulp being unloaded from Tian Xi vessel at Qingdao Port in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Photo taken on Sept.17, 2019 shows workers unloading paper pulp from Tian Xi vessel at Qingdao Port in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)