Here's Blac Chyna preparing to step into the ring for her celebrity boxing match ... and from the looks of her training, she's got a mean right hook!!!
TMZ obtained this vid of Chyna working out at Fortune Boxing Gym in L.A., where she's bobbing and weaving her way through a sparring session.
Not to give away her strategy or anything, but BC's throwing tons of punches with her right ... and keeping her left in the defensive position up by her face.
Damon Feldman of Celebrity Boxing tells TMZ .