锻 ㄉㄨㄢ ˋ duàn 炼 ㄌㄧㄢ ˋ liàn 鍛 ㄉㄨㄢ ˋ duàn 鍊 ㄌㄧㄢ ˋ liàn to toughen to temper to engage in physical exercise to work out (fig.) to develop one's skills to train oneself