In 1930, she went to Hong Kong and became a secretary for Hồ Chí Minh (at the time known as Nguyễn Ái Quốc) in the office of the Orient Bureau of the Comintern.
Pada 1930, ia datang ke Hong Kong dan menjadi sekretaris untuk Hồ Chí Minh (pada masa itu dikenal sebagai Nguyễn Ái Quốc) di kantor Biro Timur Comintern.