Aerial photo taken on Feb. 19, 2021 shows a cargo ship pulling out at the Qianwan Container Terminal in Qingdao, east China's Shandong Province. During this year's Spring Festival holiday, the Qingdao port has handled 12.47 million tonnes of cargo, up 12.8 percent year on year. (Photo by Zhang Jingang/Xinhua)

Aerial photo taken on Feb. 19, 2021 shows the automatic dock of the Qingdao port in Qingdao, east China's Shandong Province. During this year's Spring Festival holiday, the Qingdao port has handled 12.47 million tonnes of cargo, up 12.8 percent year on year. (Photo by Zhang Jingang/Xinhua)

Aerial photo taken on Feb. 19, 2021 shows containers being loaded on a cargo ship at the automatic dock of the Qingdao port in Qingdao, east China's Shandong Province. During this year's Spring Festival holiday, the Qingdao port has handled 12.47 million tonnes of cargo, up 12.8 percent year on year. (Photo by Zhang Jingang/Xinhua)