It took some convincing for this hole-in-the-wall Chinese restaurant to serve me (a Westerner) the authentic Chinese food they were serving their Asian patrons (there is no English translation for the true Chinese menu), but once they knew I wasn't going to settle for sweet and sour chicken or ginger beef, they had some great suggestions.
I ate a delicious, though expensive, Lobster Chow Mein with an egg-based cream sauce, complete with head and entrails. I was skeptical about the fried rice with salted fish I ordered to accompany it but it turned out to be wonderful. I finished the meal with a complementary red bean dessert that rounded off things nicely.
The portions are generous and you can get away with one large dish + a rice dish for 3-4 people.
Don't expect to be blown away by the decor or the service but if you're looking for authentic Chinese food in Calgary this should be on your list. Be sure to make it clear to the server that you want CHINESE food, otherwise you may get stuck with the standard Western-style "Chinese food" you can find almost anywhere in the city.