Xie Yi led the five of them into the Super Hyperbolic Time Chamber and noticed that Vegeta did not have a tail. Having no other choice, he took out his own crystal Dragon Balls and used a wish to regrow the tails of both Son Gohan and Vegeta.
Looking at the crystal Dragon Balls in Xie Yi's hand that had turned back into ordinary stone after the wish was granted, Vegeta was momentarily dazed. "Can we Saiyans grow Dragon Balls?"
Xie Yi patted Vegeta on the shoulder and smiled in response. "Don't sweat the small details, Vegeta. I've already told you how Son Goku achieved Super Saiyan 4, so the rest is up to you."
Chapter 191