Fried bee hoon is one of those dishes where the noodle is innocent and the oil is guilty. Rice vermicelli is light on its own, but stir frying it means a generous wok of oil that the thin strands soak right up. That is why a plate lands around 450 calories despite looking modest, and why the official Malaysian food database puts fried mee hoon at 173 calories per 100g.
Add seafood or extra egg and it climbs to 500 plus. The smart move if you want it lighter is bee hoon sup, the soup version, which skips the frying entirely and drops to around 290. Same noodles, no wok oil, big calorie difference.