The restaurants on the 5th floor of Block C of Joy City include: Hanbaweide Barbecue Buffet, Xianhe Barbecue Buffet, Happy Ranch Barbecue Buffet, 1987 Deducting Teppanyaki, Xidi Steak, Oriental jiaozi King, Lihu Steamed Vegetable, Busan Cuisine, Jiangtaiwuer and Grandma's House;
Restaurants on the 5th floor of Block A of Joy City include: noodle soup house, Green Snow House, Chinatown, Nadu spicy pot, Jialebi Italian restaurant, Dragon Brick Villa and Haidilao.
There doesn't seem to be the one you mentioned.