修 行

to devote oneself to spiritual development (esp. Buddhism or Daoism)
to devote oneself to perfecting one's art or craft

Appears in

修行人xiū xíng rénperson pursuing religious practice (Buddhism)师父领进门，修行在个人shī fu lǐng jìn mén , xiū xíng zài gè rénthe master leads you to the door, the rest is up to you