老馬識途

1. • an old horse knows the way (idiom) an experienced worker knows what to do
2. • an old hand knows the ropes

Character by character

• 老(lǎo)prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity
• 馬(mǎ)surname Ma
• 識(shí)know
• 途(tú)way