China 1936 - muslim population 50 million 2006 - it is less than 10 million.
India 1947-muslim population 30 million 2007, muslim population in India 200 million
In Western China where muslims were once a majority, han chinese have been settled in. arabic script and skull cap is banned; koran meetings and haj disallowed; beard length regulated, maulvi's speeches need prior clearance from government; islam lost its base and most musims in china rightly have given up on islam. (This is the reason why, not infrequently, you see chinese being beaten up/killed in pakistan - NWFP)
Chinese know how to deal with islam. In India, nehru, in a monumental perversion of secular values, encouraged totalitarian islamism and christianism in the garb of secularism while suppressing tolerant hinduism as communal.