The six brands of Xibei Restaurant include Xibei Youmian Village, Jiujiuding Felt House, Xibei Seafood, Jia Guolong Kung Fu Cuisine, Jia Guolong Air Steamed Bread and Gong Changzhang.

1. Xibei Youmian Village: This is Xibei's main brand, focusing on all kinds of northwest delicacies, such as Youmian Fish, Mongolian Meat Pie, Yellow Steamed Bun, etc.

2. Ninety-nine Felt Rooms: This is a high-end brand of Xibei, which focuses on the whole sheep feast with Mongolian characteristics.

3. Xibei Seafood: This brand focuses on all kinds of seafood, such as grilled fish and seafood porridge.

4. Jia Guolong Kung Fu Cuisine: This is a new brand launched by Xibei, which focuses on various Kung Fu cuisines and is inspired by the special cuisines in various regions of China.

5. Jia Guolong air bun: This is also a new brand of Xibei, which focuses on Chinese hamburger products and combines traditional and modern cooking skills.

6. Gong Changzhang: This is Xibei's fast food sub-brand, which focuses on all kinds of fast food, such as Chinese hamburger and mutton bread in soup.

Generally speaking, these six brands cover all kinds of food fields and meet the needs of different consumers.