There're a lot of Chinese restaurant in Seoul.
Actually, most of them serving meal adopted in Korean's taste.
(Of course, there's traditional Chinese restaurant in Seoul, too.)
These are Korean's most favorite & common menu at Chinese restaurant. (me also!)
Kind of....set menu for Korean? :-)

탕수육 (Tang Soo Yook) / Pork with sweet n sour sauce

짬뽕(Champon) / Chinese style Spicy Noodle Soup(?) (with seafood)

자장면(Ja Jang Myun) / Noodle with Chinese Soy Bean Sauce

호화반점(Ho hwa ban jum) at Apgujeong.
If you want to taste Korean-Chinese Food at Apgujeong, I would like to recommand here.
They serve good quality food with reasonable price, and good service.

