千 ㄑㄧㄢ qiān 锤 ㄔㄨㄟ ˊ chuí 百 ㄅㄞ ˇ bǎi 炼 ㄌㄧㄢ ˋ liàn 千 ㄑㄧㄢ qiān 錘 ㄔㄨㄟ ˊ chuí 百 ㄅㄞ ˇ bǎi 鍊 ㄌㄧㄢ ˋ liàn after hard work and numerous revisions (idiom) the vicissitudes of life