Complex sentence: Lim's collective paid a large amount of money in that year for Megadeth, Biohazard, and Yo La Tengo to appear, and the 2001 Formoz Festival became the largest international music festival ever held in Taiwan.
Split into simpler sentences: Lim's collective paid a large amount of money in 2001 for Megadeth, Biohazard, and Yo La Tengo to appear. That year, the Formoz Festival became the largest international music festival ever held in Taiwan.