Muslims have been aware of China since the birth of Islam, and probably even before (reference the Quranic verses on silk). If they could not convert China in Islam’s 1400+ year history, what has curtailed and still is hindering, their progress?
Probably the cultural divide, or rather the gulf between Chinese culture and Islam, though there are probably a number of factors involved. But you are progressively walking the conversation away from your original point which you have failed to defend so I wish you well as you ponder such questions.