Wudaokou is a famous food street in Haidian District, Beijing, with many food shops, including several Linxia cold rice noodle shops. The following are some popular Linxia cold noodle shops in Wudaokou:

1. Yaodonggou cold noodle shop: Located on B1 floor of Wudaokou Shopping Center, it is an old-fashioned cold noodle shop in Beijing, which has won the love of many diners for its unique Yaodonggou flavor.

2. Xibei Youmian Village: Located in Wudaokou Shopping Center, Xibei Youmian Village is a restaurant with new Shaanxi cuisine, among which Linxia cold rice noodles are very popular.

3. Shanbei Folk House: Shanbei Folk House, located near Dongshengyuan, Wudaokou, is a restaurant mainly serving Shaanxi cuisine, among which Linxia cold rice noodles are also famous.

4. Yaodonggou Snack Bar: Located near Wudaokou subway station, Yaodonggou Snack Bar is a gourmet restaurant that deals in all kinds of snacks, among which Linxia cold rice noodles taste good.

To sum up, there are many delicious Linxia cold rice noodle shops in Wudaokou. You can choose according to your own tastes and preferences.