It toils and spins SO HARD
Literally: difficult – go / undertaking – suffering – go / undertaking
Alternately: Extreme difficulties or suffering. In particular, this describes when someone is enduring privation and hardship as part of (Buddhist) ascetic training in search of enlightenment.
Notes: 行 in this case refers to 修行 (shugyou), “ascetic training.”
This compound comes to us from the Lotus Sutra (法華経, Hokekyou or Hokkekyou).