ET's exclusive Transformers: Age of Extinction set visit continues across the globe in Hong Kong, where we find out what the cast does in their downtime, including some recurring pranks performed by Mark Wahlberg and Jack Reynor on their female co-star Nicola Peltz.
With legions of ardent fans surrounding the set, explosions were just as rampant in Hong Kong as they were when ET visited the Detroit set, which was made up to look like Hong Kong.
VIDEO: Explosions Galore on 'Transformers 4' Set
However, setting up the many explosions, while also simultaneously dealing with distractions from onlookers, leaves the cast with plenty of downtime. When Mark Wahlberg wasn't giving Rocsi tips on how to throw football, he and Jack Reynor were up to no good playing pranks on Nicola Peltz.
"We got Wild Weave Wednesdays...when Mark and I rip out Nicola's weave every Wednesday," shared Reynor (Shane), who plays Peltz's (Tessa) boyfriend in the fourth installment of the Transformers live-action film series.
VIDEO: Bay Teases 'Different' Feel to 'Transformers 4'
The 18-year-old actress, who stars in the new drama series Bates Motel, revealed that between her 21-year-old on-screen flame and her 42-year-old on-screen father, Wahlberg (Cade) torments her the most.
"He thinks it's O.K. to pull out my hair. Jack does it, but Mark is the worst," Peltz said.
Watch the video above for another exclusive look at the set of Transformers: Age of Extinction, which is in theaters July 27, 2014.