I actually have some beef lo mein in my freezer as we speak. About half my diet or more consists of Chinese food and Mexican food. It helps me lose weight, actually. There is no actual Hong Kong lo mein, per se. Buy the lo mein style of cooking is very popular in Hong Kong. Lo mein, like many dishes, contains assorted vegetable and some kind of meat. The main difference between lo mein and cow or chao mein is the way the noodles are prepared. Noodle for lo mein are tossed noodles, soft egg noodles. While chow mein noodles are crispy, being fried egg noodles. Both are delicious and one of my favorite foods. Though I also tend to prefer the lo mein noodles.