China doesn't seem that interested to help the regime. They'll get their oil from any regime. They'll sell them stuff but I don't see them paying the salaries of the IRGC.
There are not 50 vessels passing per day and also the US is now threatening a blockade. If Iran's oil terminal is bombed as is the threat then it's unlikely Iran will allow other vessels through. Likely most of the few vessels that are passing today are carrying Iranian oil.
https://www.bbc.com/news/articles/c3w39lg84w2o
19 ships since the ceasefire by 17:00 BST on 10 April.