Su Er Dai
Su Er Dai is the daughter of Muslim parents from Qinghai Province. Her father owns a noodle shop in the heart of Zhudi. She spends her days wandering in and out of the restaurant and freely around the Temple Square nearby.
Qinghai (Chinese: 青海; pronounced [tɕʰíŋxài̯]) is a province of the People's Republic of China located in the northwest of the country. As one of the largest province-level administrative divisions of China by area, the province is ranked fourth-largest in size, but has the third-smallest population.
Located mostly on the Tibetan Plateau, the province has long been a melting pot for a number of ethnic groups including the Han, Tibetans, Hui, Tu, Mongols, and Salars. Qinghai borders Gansu on the northeast, Xinjiang on the northwest, Sichuan on the southeast, and the Tibet Autonomous Region on the southwest. Qinghai province was established in 1928 under the Republic of China period during which it was ruled by Chinese Muslim warlords known as the Ma clique. The Chinese name, "Qinghai" is named after Qinghai Lake (cyan sea lake), the largest lake in China. The province was known formerly as Kokonur in English, derived from the Oirat name for Qinghai Lake.
More on Wikipedia: https://en.wikipedia.org/wiki/Qinghai
Islam in China
Islam in China has existed through 1,400 years of continuous interaction with Chinese society. Currently, Muslims are a significant minority group in China. Hui Muslims are the majority Muslim group in China. The greatest concentration is in Xinjiang, with a significant Uyghur population. Lesser but significant populations reside in the regions of Ningxia, Gansu, and Qinghai. Various sources estimate different numbers of adherents with some sources indicating that 1.5-4% of the total population in China are Muslims. Of China's 55 officially recognized minority peoples, ten groups are predominantly Sunni Muslim.
More on Wikipedia: https://en.wikipedia.org/wiki/Islam_in_China
Small restaurants serving Lanzhou-style lamian are very common throughout western China where they have formed a staple diet for centuries, as well as eastern Chinese cities. They tend to serve a variety of low cost meals, with a choice of lamian, daoxiaomian (simplified Chinese: 刀削面; traditional Chinese: 刀削麵; pinyin: Dāoxiāomiàn; literally: "knife-sliced noodles") and perhaps Xi'an-style paomo (steamed bread dipped in soup). Noodles may be served with beef or mutton, either in soup or stir-fried. Lamian can also be served cold with salad ingredients such as shredded cucumber and tomato to make a refreshing summer dish.
Many of the lamian restaurants are owned by Hui ethnic families from Northwestern China, and serve only halal food (thus no pork dishes). Lamian restaurants are the most common halal restaurants in eastern China.
More on Wikipedia: https://en.wikipedia.org/wiki/Lamian