Class CG91Same-level trapInspectgōuHSK 7–9to hook; to sew钩子gōuzihookjūnHSK 7–930 catties; great千钧一发qiānjūnyīfàa thousand pounds hangs by a thread (idiom)The one-stroke difference:钩's right side is 勾 and 钧's is 匀: the middle stroke folds down-left in 勾 and runs flat in 匀.Drill this pairWrite the difference