Firstly, many foreign ships arrive at the destination port,but can not unload the cabinets, the cabinets can only stay on the ship. Then the harbor is all about the big ships lining up inside and the little boats lining up outside.
Secondly, China refuses all containers returned from abroad in consideration of covid-19 virus remained in containers. This leads to no enough containers to use in China. And there are? many goods to load in containers to depart China. So it’s very difficult for suppliers to get the containers to load their goods. And many big ships with those containers on could not release the containers,they are gathering at China harbor and could not sail abroad again, then the ships used are dropped in big quantity. All of these points make it hard to get the containers to use in China now.