While prosthetic limbs are of course available in China, they're generally accessible only to those who consider themselves too good for homemade bomb fishing. So, after eight years of guiding his two nephews' tinkering, Sun managed to perfect a pair of honest-to-goodness steampunk bionic limbs. Constructed of steel and operated with his elbows via an intricate series of wires and pulleys, he's once again able to do just about everything you can do with actual hands, such as grasping, holding, and choking the life out of his enemies.
They work so well, in fact, that Sun and his nephews have started constructing prosthetic limbs for other similarly unfortunate folks. That, or they're building an army bent on world domination.
Oh, did we mention he has his own Evil Dead II attachment?
We're gonna go with the world domination thing.