At some point, every country builds a Great Wall to keep the secret of its cuisine from spreading to foreign nations, only to find that the real wall lies in its heart. Tear down the Great Wall of painful secrets with today's Groupon: for $7, you get $15 worth of Chinese fare at Red Corner China Diner in Midvale.

At Red Corner China Diner, proprietor and Beijing native Sam Su infuses local palates with the tastes of spicy Szechwan cuisine. Forkfuls of dan dan noodles ($7.99) pepper taste buds with bamboo shoots, ground pork, and egg noodles, and thin pancakes scoop up succulent chicken, cabbage, carrot, and egg in dishes of moo-shu chicken ($9.99). Loaded with spice, house specialties include the garlic dragon shrimp ($11.99) with wok-fried string beans and crushed chili, and the firecracker chicken breast ($9.99), a piquant blend of tender chicken, peppers, and onions served with black-bean sauce and a hazmat suit. The cantonese beef chow fun ($7.99) blends cuts of stir-fried beef with wide rice noodles and bean sprouts, and the vegetarian Three Treasures from the Earth ($7.99) lets diners excavate sautéed potato, bell pepper, and eggplant from beneath strata of rich, house-made brown sauce.

With minimal decoration, Red Corner’s interior pops against bright red walls and dangling red light fixtures that illuminate maroon booths and varnished tables dotted with order-number stands. While awaiting their meal, diners can check email using free WiFi or admire the restaurant's collection of inedible ceramic figures.