Zheng He (Cheng Ho) was of Persian descent paternally but have ancestry of other ethnicities because his ancestors, being a minority, must have intermarried heavily with the local Chinese population. I've seen blood descendants of Zheng He's brother

Zheng He (Cheng Ho) was of Persian descent paternally but have ancestry of other ethnicities because his ancestors, being a minority, must have intermarried heavily with the local Chinese population. I've seen blood descendants of Zheng He's brothers and they look Chinese.

And it's not true that Han Chinese cannot become Muslim.