I think I don't understand this article. The container share graphic shows that Huayang market share is 2/3rds of traffic, but the numbers in all the rest of indicate that Huayang is a monopoly. 2/3rd is a lot but doesn't seem monopolistic to me.

It's also interesting that the article goes in depth with detail (because of data availability perhaps?) from the US side of the trade, but very light on detail (and full of implications) about stuff going on in the China side.