I updated most of them
https://www.imcdb.org/vehicles_make-Yue+Loong.html
I made the chassis code always visible beside model names in lists for that make, like for BMW or Mercedes.

What about this one?
https://www.imcdb.org/vehicle_1620317-Yue-Loong-YLN-251-V640-1965.html
I suppose that it can't be 251 since the movie is from 1966?

Also, there are YLN-751 & YLN-753 to update with a model name
And a few Bobby for which the right code should be chosen (otherwise I can use YLN-352 by default?)

And a few unknowns: https://www.imcdb.org/vehicles.php?make=Yue+Loong&model=unknown&sortBy=2