Transformers: Age of Extinction director Michael Bay recently wrapped 10 days of shooting in Hong Kong, where he was attacked on the set by a deranged man wielding an air conditioner unit. The filmmaker recently revealed in an interview that the Hong Kong scenes will make up 30 to 35 minutes of the movie. He also teased why the Autobots come to China in the first place.
"We are not destroying Hong Kong. I can't tell you how they get here. They are not rescuing Hong Kong but definitely rescuing something."
Another story from Seibertron revealed new plot details from the production's shoot at Wulong Karst in China.
"According to director Michael Bay this will be the location of a heroic turning point scene, which takes place after the fall of Hong Kong. A group of Transformers will meet up with another group of Transformers where they battle their way out of a crater (Wulong Karst is known for it's sink holes) that was apparently created by a crashed starship. After the Wulong Karst battle they return to Hong Kong."