"Hai Ky Mi Gia is a hidden gem in the Tenderloin district that serves authentic and delicious Chinese and Vietnamese noodles. The restaurant is small and cozy, with friendly staff and fast service. The menu offers a variety of noodle soups, dry noodles, and rice dishes, as well as some appetizers and beverages. I ordered the braised duck leg noodle soup with thick egg noodles, which was a generous portion of tender and flavorful duck meat, fresh vegetables, and chewy noodles in a rich and savory broth. The soup was hearty and satisfying, perfect for a cold day. The noodles were cooked just right, not too soft or too hard. The duck leg was easy to peel off the bone, and the skin was crispy and tasty. The broth had a nice balance of saltiness, sweetness, and spiciness, and I enjoyed adding some vinegar and chili sauce for extra kick. The station also had some condiments, such as soy sauce, hoisin sauce, and sriracha sauce, that you can use to customize your dish. The price was very reasonable, considering the quality and quantity of the food. The restaurant accepts cash and credit cards, and there is a tip jar at the counter. Overall, I had a great experience at Hai Ky Mi Gia, and I would definitely recommend it to anyone who loves noodles and duck. It is one of the best places to eat in San Francisco, especially if you are looking for authentic and affordable Asian cuisine. The restaurant is located at 707 Ellis St, San Francisco."