Meanwhile, Fox arrives in Hong Kong to meet with Lau. He checks in his mobile phone at the front desk at Lau's building, as there are no cell phones allowed on the premises. Fox meets with Lau, and informs him of Wayne Enterprises' plans to cancel negotiations with his company. However, he secretly keeps one cell phone in his pocket, which has been adapted to produce a sonar map of the surrounding area. Upon leaving the building, he does not pick up the phone he dropped off, and he produces the map of the building to Bruce Wayne. That night, the phone that Fox left at the front desk emits a high frequency that shuts down all power in the building. Batman crashes in through a window in Lau's office, and after disabling some guards, grabs Lau and escapes by sending a balloon attached to a cable to a plane he has chartered flying over Lau's building.