Visa Application for me and my husband both have Canadian passport

CurrenHello,

Both me and my husband are Chinese born in India. we are now Canadian citizens holding Canadian passport. My mom was born and raised in India as well. My dad was born in China and came to India when he was six years old. My mother-in-law was also born in China. Currently, both my parents and my mother-in-law are Canadian citizen and holds Canadian citizenship card. What document does me and my husband need to get a tourist L type to visit China this October?