In Kashgar, a city close to the Pakistan and Afghan borders, some women not only cover their heads, but also veil their faces. In some cases, dark brown cloths envelope the whole head. Clocks in many mosques, restaurants, cafes and shops are set to Xinjiang time. This is two hours behind Beijing time, the official standard for the entire country, which means China's sun does not set until after 10 p.m. in Kashgar in the summer.