Of course. Mainlanders do also slingshot stuff across the border when needed. They also have a secret network of tunnels they can use to sneak in and out of China undetectedly. In fact the easiest is using a paddle boat at night when the toddlers are sleeping, with the gentle motion of the waves the little ones will feel very comfy during the illegal crossing into communist China, while being kidnapped and smuggled across the border (where some evil rich mainlanders are waiting to spend a fortune on kidnapping charges, fake documents, bribes, and more, instead of having a lowly mainland Child of their own).