Feng finished the Memo of 1989 Student Protests (八九學運備忘錄), the draft of A Tiananmen Journal: Republic on the Square in early 1991.
Feng beendete Anfang 1991 die Aktennotiz der Studentenproteste 1989 (八九 學運 備忘錄), der Entwurf des Buches A Tiananmen Journal: Republic on the Square.