When Hoàng Ngọc Phàch, a young Vietnamese living in Hanoi, published Tô' Tâm (Pure heart) in 1925, his book immediately became a cause célèbre. The first three thousand copies sold out in two weeks. The publisher printed another two thousand copies, and they too quickly disappeared from the bookstores (Phan Cự Dệ 1974:21). Girls disappointed in love succumbed to the influence of the work and committed suicide by jumping into Lake Tây or Lake Trùe Bạch. The work provoked a debate concerning what was proper reading for young women that continued into the 1930s.