風火輪

1. • wind-and-fire wheel, weapon used in hand-to-hand fighting

     martial arts

2. • a magical pair of wheels on which one can stand to ride at great speed, used by Nezha 哪吒 nézha

     Daoism

3. • never-ending treadmill

     fig.

Character by character

• 風(fēng)wind
• 火(huǒ)surname Huo
• 輪(lún)wheel