Mui fan is the plate people order when they want something that feels lighter than fried rice, and it is not lighter. The rice is not fried, but there is 250g of it, which is 325 calories. The gravy is stock thickened with cornstarch and swirled with egg, about 150 calories for a full ladle. The toppings are fried in the wok first with 12g of oil, another 110. Prawns, fish cake and pork slices together are only 120. So a plate of 719 is mostly rice, gravy and oil.
Compare it to yong chow fried rice at about 620. Mui fan is 100 calories more, because the gravy adds volume that fried rice does not have. It feels like a wet, gentle dish. It is a large dish. That is the whole trick of gravy plates at cze char, the beef hor fun at 697 works the same way.
Portion is the fix. Most cze char stalls pile mui fan high because the gravy hides how much rice is under it. Ask for less rice and you can take 100 to 150 calories off without changing the dish. Ask for extra vegetables and the stall will usually add a handful of cabbage or choy sum for under 30 calories.