造诣
Meanings
1. level of mastery (of a skill or area of knowledge)
2. (archaic) to pay a visit to sb
Characters used
Examples1
虽然 在 钢琴 上 她 的 造诣 不是 很 深, 但是 她 勤 而 好学。
Her repertoire on the piano is not very large, but she has learned every piece by heart.