少不更事

    shàobùgēngshì

    1. Idiomyoung and inexperienced; wet behind the ears (idiom)

    他少不更事,对这份工作的难度估计不足。Tā shàobùgēngshì, duì zhè fèn gōngzuò de nándù gūjì bùzú.He was inexperienced and underestimated the difficulty of the job.