There are actually two notable Northern Chinese places in Portland, and both in my opinion beat out some popular establishments in Rowland Heights Calif...which is saying a lot for Portland.
1. Mandarin House on Second and Ankeny. They even serve Chinese breakfast donut sticks with sweet soy milk--ALL THE TIME. The must try is "Numbing Hot Firepot Fish Soup" which is totally unique. I think it is only in the specialties section at the beginning of the menu...not sure if it is only written in Chinese or not. Be sure to order everything to Chinese tastes. Tried the Kung Pao Chicken, again totally unique. Beef sandwiches are good, tho lacking in celantro...for those who still eat beef in this town. Noodles however, are what this place is proud of...handmade. The portions are not huge, but prices arent outrageous. Just pretty good food. Proprietors and chef are from Shantung province China, and the chef is no slouch. Flavors are consistent every time. Don't know why but no one goes here.
2. Chinese Delicacy on 82nd. Go on Sunday noon. I have been here many times and this is the time the best chef has a shift. The evidence...packed with Chinese customers every Sunday. Don't care for their dumplings/potstickers but they are reasonably priced. Some of the noodle dishes are lackluster like the don don noodles. Stir-frys here out pace everything else, difficult to beat on Sundays.