Zung Wei-tsung or Cheng Wanzhen (程婉珍), known after 1926 as Mrs. Chiu, was a Chinese social worker, educator, and journalist in the 1920s.

She was interested in child labor and women workers, and involved in leadership of the YWCA at the international level.

[12] With the YWCA, she took particular interest in child labor regulation, and working conditions for women, in the face of rapid industrialization.

[13][14] She was founding president of the Shanghai Business Women's Club,[15][16] wrote a column in a daily newspaper,[17][18] and taught English at Pingmin Girls' School and the Laura Haygood Normal School in Suzhou.

[24][25] "Although industrially China has made a bad beginning," she wrote in 1924, "she is still in the advantageous position of being able to learn from the West.