Based on the information given by Major Yu Mei, the Red Beard Bandits had a long history spanning about 40 to 50 years, since its leader—Red Beard himself—was a very cunning man who escaped several attacks and accumulated a lot of wealth at the same time. After Red Beard grew older, he probably wanted to spend his old age in peace and secretly hid all his accumulated wealth. He then sought help from a wealthy merchant group and transformed himself into a mercenary group.
"Dawn Academy is closest to Silver Province, so it's not surprising that you were able to get this kind of information." Lilith did not find it too surprising that Xiao Lin knew all that.
"There are plenty of thieves and robbers in Silver Province and repeated prohibition did nothing to stop them. The wealth they accumulated is not a small amount either, but few people dare to plot against them. Do you know why?" Lilith asked.