Burn x Idea x Nen?
Nen × Nen × Nen?
Killua and Gon progress through the 150th floor up to the 200th floor. There, they meet a bemused Hisoka blocking their path with a malevolent forcefield. Unable to continue, they find Zhixi and his kind martial arts instructor Wing (a.k.a. Dalek or Jokko) for supplemental training.