In his younger days, Gan Ning was known to be very energetic and eager to behave like a "youxia" or vigilante. He gathered a group of wayward young men under his leadership to rob and plunder for a living. They armed themselves with bows and crossbows, wore feathers in their hats and tied bells on their bodies. The ringing of the bells alerted people to the presence of Gan Ning and his gang. Gan Ning's plundering and murderous ways made him infamous throughout Ba Commandery. On land, he and his gang travelled by riding on horses or in chariots in a certain formation; on water, they sailed on light vessels linked together. They also wore elaborate and flamboyant garments to attract attention. When they stopped at a certain location, they used silk to tie their boats to the jetties; when they were departing, they cut the silk and abandoned it as a display of their extravagance.