Complex sentence: Chainrai has a Indian wife with whom he has 3 childrens, he is also a leading member of the South Asian society in Hong Kong and can speak Nepalese, Hindi and Cantonese.
Split into simpler sentences: Chainrai has a Indian wife with whom he has 3 children. He is also a leading member of the South Asian society in Hong Kong and speaks Nepalese, Hindi and Cantonese.