I encourage him to spend more time studying foreign languages. It goes without saying that he must become fluent in English as well as German and Chinese. Further, he studied French and Latin in school.
我鼓勵他多學習不同的語言，中文、德文、英文是他必須精通的語言固不在話下，法文、拉丁文是他在學校中正在學習的語文。