This street side butcher sells only beef and lamb. Many of China's Muslim minority do not eat pork and shops such as this one cater especially to them. The script at the top of the photo is, I think, the written language of the Uighurs, a non-Chinese, Muslim minority nationality who come from China's far west and are related ethnically to other central Asian and Turkic peoples. The proprietor of this shop is probably of the Hui nationality, another Muslim minority from western China. Unlike Uighurs who look distinctly Caucasian, Hui people appear to be much more closely related ethnically to China's Han majority. Whatever their ethnicity, few of Beijing's Muslim's are devoutly religious, but many do refrain from eating pork. Unlike southern Chinese who eat pork almost exclusively, Beijing's Han Chinese majority also has a taste for lamb and beef. As a result restaurants serving lamb dishes from the western part of the country are popular in Beijing and shops like this one do a brisk business.