So in Time after Time part 2... the thing I have been waiting for forever happens.
The scene where Dashi puts Wuya into a puzzlebox. At the beginning of the series, they told us that Dashi pitted his magical objects against Wuya's heylin magic, in the very first Xiaolin Showdown. Wuya was said to be the ultimate evil and that her awakening caused the Shen Gon Wu to activate.
Chase's milkshake brings all the Xiaolin to yard. They're like, it's better than Wuya's. Damn right, it's better than Wuya's. He could teach you, but you'd have to give him your soul.