Translations:Masters/157/en
From DragonMineZ Wiki
Every master who teaches also has a Train option. Shadow Clone spawns a Shadow Dummy copy of you to spar with. Five masters also run a training minigame there: Krillin (Ki Control), Gohan (Shadow Boxing), Trunks (Precision), Vegeta (Gravity) and Mr. Popo (Rhythm, inside the Time Chamber). Old Kai's Unleash Power service chains all five into the Ultimate Challenge.