In the far western province of Xinjiang, 1930km away from Ningxia, violent anti-government attacks have led to a crackdown and the internment of a million Uighurs. Detainees caught up in the cultural eradication programme recount stories of political indoctrination, psychological abuse and torture. All are subject to intense surveillance in what has become a police state, heightened with modern tools such as facial recognition and DNA collection.
Ningxia authorities recently signed a cooperation agreement so their officials learn from the latter's policies.
The suppression of Islam in Ningxia is nowhere close to Xinjiang levels, but in Yinchuan the early signs of a cultural eradication drive are visible. Arabic signs are scratched out in the streets, copies of the Koran have disappeared from bookshop shelves and the onion-shaped domes have been removed from buildings all across the city.
The Chinese state, a massive provider of jobs, has the levers to impose its will - for example, by banning government workers from wearing white prayer caps to work.
In the local market one woman said police had raided her store, ordering her to cut out Arabic labels from inside the prayer hats on the shelves. Fearing more trouble, she also turned the few decorative plates in the display window inward so the Arabic script cannot be seen from outside. It is an introversion visible throughout this minority community, which can trace its roots back to the ancient Silk Road traders of central Asia.