Definitions

1. 1. to make painstaking efforts (idiom)
2. 2. after much trouble
3. 3. to work hard at sth
4. 4. make extraordinarily painstaking efforts to reach a place where no one else can reach

Components

• 苦心 kǔ xīn – painstaking effort
• 孤 gū – lone
• 诣 yì – to go (to visit a superior)