I love Guo Xin. The food is delicious and so cheap! You really must try the aubergine and Chinese cabbage, both are so so tasty. It's a bit of a squeeze but it kind of adds to the charm of the place. Perfect for a relaxed dinner with friends. I just wish fewer people knew about it because sometimes there's a queue to get a table!
Chinese Ravioli or Gyoza are very popular in Paris at the moment, Guo Xin is almost exclusively making Gyoza. Popular restaurant in Belleville come early as the restaurant is rather small. Food is good and very cheap, Gyoza + beer is a good combination for an unpretentious dinner. Place is limited to the minimum in terms of decoration, silverware and/or service