Just to share my experience with chu wei san tong 10 days trial lunch package for 2 pax:
Delivery time: 9+am!!! Too early!
Portion: Barely enough if 2 pax are hungry
Variety: Poor; same style or sauce used in preparation
Sample menu: 4 small fishballs, braised peanuts no meat, sweet & sour pork with lots of coated flour and plain stir fried cai xin
Overall: Below average; lots of room for improvement.