Main melody films are propaganda works that pay tribute to the Chinese nation, the party and the army. Since the turn of the century, they have gradually developed into the main genre of Chinese cinema, and its "blockbusterization" is arguably the most phenomenal aspect of the 2010s Chinese film industry. As an increasing number of Hong Kong directors are commissioned to direct main melody blockbusters, Chu examines their contributions to this genre, shedding light on the development of cross-border cooperation between the mainland and Hong Kong film industries. Professor Yiu-Wai Chu is Director and Professor of Hong Kong Studies Programme at the University of Hong Kong. He has authored and edited over twenty books, including Lost in Transition: Hong Kong Culture in the Age of China (2013), Hong Kong Cantopop: A Concise History (2017), Hong Kong Culture and Society in the New Millennium: Hong Kong as Method (2017) and Found in Transition: Hong Kong Studies in the Age of China (2018).