Probably a Chinese chef, or trained by a Chinese chef in Dhaka. There are a few around Dhaka. But still, I did not expect Dhaka to have a good Dim Sum, which is a suprise. Back when I was growing up in 90s Dhaka, Chinese restaurants were just another word for fancy restaurants. The food was more thai than Chinese
Have you tried the local cuisine? From my experience, Chinese folks tend to give South Asian cuisine a miss. Similarly, South Asian folks aren't that enthusiastic about authentic Chinese cuisine. Personally, Chinese and South Asian cuisine is some of the finest on earth. They both have their place, and the world is richer for it. It's impossible to choose between the two.
Having said that, both sides (at least to my tastebuds) have their own specialties:
Chinese: Seafood (1000X, lobster, crab, exotic fish, squid, octopus), roast duck (or better, goose), Dim Sum, hand-beaten noodles, mastery of steamed food, vegetable preparation, and dishes. Those are the type of Chinese food I eat, I'm sure there are many more to discover (i will be posted to Dalian at some point). Generally, I feel the Chinese are a bit more adventurous when it comes to food
South Asians: Better at rice, bread, desserts, anything with milk, and probably better at preparing meat, particularly beef (a Bengali specialty). I find Chinese meat quality to be a bit generic, with the exception of Roast Duck. Overall, South Asian cuisine is perhaps a bit more conservative
There are some surprising overlaps. If anyone grew up in 90s Dhaka and remembers Swiss Bakery or Fuang Foods (trendy bakery chain), the products they sell were almost identical to stuff you'll find in Chinese bakeries. When I went to Chinese bakeries in Singapore, I was immediately reminded of my childhood tastes. Bengali's eat a lot of Pitha. And some of our rice-based Pitha's are quite similar to certain types of Chinese fitters. Especially Bhappa Pittha. The Chinese version is virtually identical