Why does China have women-only mosques?
The Islamic world is wide and various, its points of view almost as numerous as its people. And Islam in China, with its long tradition of women-only mosques, provides a good illustration, says Michael Wood.
In the middle of the plain of the Yellow River in Henan province is the city of Kaifeng. The old capital of the Song Dynasty, 1,000 years ago, it was one of the greatest cities anywhere in the world before the 19th Century - and a meeting place of peoples and faiths.