The Crossing is based on the weird fact that there is a black market of iPhones going from Hong Kong to China, where they were probably made in the first place.
To make a little extra money shy 16-year-old Peipei smuggles for a gang. It begins harmlessly enough, slipping a couple of iPhones wrapped in cling film into her school bag
"Newcomer [writer-director] Bai Xue is more interested in Peipei's character than the smuggling though, concentrating her cameras on the gradual change in Peipei and her relationships as she gets more involved."- Tony Rayns, Sight & Sound.