S3E11 The Ox-Head Incident

While the Chans are out looking for the Noble Ox, a Yak called Yaka in the Himilayan Mountains, Hak Foo attacks Daolon Wong in order to obtain the power of the Ox for himself, only for Daolon Wong to turn him into his deadliest Dark Chi Warrior. Soon after Uncle secretly transferred the power of Superhuman Strength into himself for safekeeping, his spiritual head is captured by Daolon Wong to find out where the Strength power had been transferred to.