Hi, i'm doing a family tree assignment for school and I had a question about what characters are used for the surname: "Der/Tse"(Cantonese)? and also how do u pronounce it(in Mandarin)? I don't have much information about how you would write my great-grandmother's married name and I need to know this information for my course assignment. My knowledge of Chinese Characters is very limited and help would be greatly appreciated.