In 1937, due to the outbreak of the Second Sino-Japanese War, Zhou and his family moved to the wartime capital Chongqing, and his daughter died.
Pada tahun 1937, karena pecahnya Perang Tiongkok-Jepang Kedua, Zhou dan keluarganya pindah ke ibu kota masa perang, Chongqing, dan putrinya meninggal dunia.