I went to a Sichuan restaurant on Tongzhi Street after hearing a friend's recommendation. It's called Fa Ji Sichuan Big Basin Fish. Since it's called Sichuan Big Basin Fish, you'd think it only serves Sichuan cuisine, but they also serve Northeastern cuisine, and it's very authentic, and I think it tastes better than their signature Sichuan cuisine. I recommend the Big Basin Beef, Saliva Chicken, and Big Basin Black Fish, all of which are classics that you'll want to eat again.