Fei Xiaotong
During the 1960s, Yang began to use leaves of absence for a series of extended visits to universities in Hong Kong and other parts of Asia to strengthen their instruction in sociology.In the late 1970s, following the end of the Cultural Revolution, Fei Xiaotong invited Yang to return to China to give seminars in the newly rehabilitated discipline of sociology, but Fei was then criticized for wanting to "bring capitalism back to China" and the invitation was cancelled. Yang did return a few years later.