Even in modern times, let alone back then, have you ever seen anyone make a commercial that rolls a massive list of credits at the end like a movie?
As soon as shooting wrapped, Hou Yong handed the master tapes of the commercial and the music to Qu Yiheng.
"Two things. First, contact various television and radio stations. Run the ad on TV and the music on radio. The music can be broadcast for free with no copyright restrictions—figure out the schedule and itinerary yourself."
Chapter 125