Watch as this 7-year-old stacks cups insanely fast

Yung-Deng Lin can stack a group of cups in about 1.6 seconds, an impressive time for a 7-year-old.

To give an idea of how fast the child can stack cups, the World Sport Stacking Association overall record for a 3-3-3 cup stacking is 1.363 seconds, held by the top-ranked cup stacker in the world, William Orrell.