擅长
shàncháng · HSK 7
be good at
🏆 擅 be-expert-at + 长 strong-point; your long suit is what you excel at
擅长 pairs 擅 (master, be skilled) with 长, whose other reading means a strong point or forte. Together they name the thing you are good at. English mirror: a long suit is the area where you surpass others.
长 — pictograph of long-haired person with cane
Originally a pictograph showing a person with long, flowing hair leaning on a cane, representing an elder. The meaning extended from 'long hair' to 'long' in general, and also to 'elder' or 'to grow' (read zhǎng). The modern form 长 is a simplification of the traditional 長.