Ka Won Seng may be the best Chinese restaurant in Mexico City. After a few trips to Barrio Chino and a variety of disastrous meals, finding this place has been one of my biggest joys since moving out here a couple weeks ago. They have a daily dim sum menu posted on a red piece of paper by the cashier. Also, I was very excited to hear that one of their specialties was Cantonese style roast duck! I can't wait to go back.