做證

variant of 作證|作证[zuo4 zheng4]

to make; to produce / to write; to compose / to do; to engage in; to hold (a party etc) / (of a person) to be (an intermediary, a good student etc); to become (husband and wife, friends etc) / (of a thing) to serve as; to be used for / to assume (an air or manner)

certificate / proof / to prove / to demonstrate / to confirm / variant of 症[zheng4]