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Open the tool →长虺成蛇 (zhǎng huǐ chéng shé) is a Chinese idiom (chengyu) meaning “to allow a small problem or minor evil to grow unchecked until it becomes a serious threat or major disaster; to nurture an evil until it becomes a significant danger”.
长虺成蛇 is pronounced zhǎng huǐ chéng shé in Mandarin Chinese.
Literally, 长虺成蛇 means “to grow a small viper into a snake”. It is used to mean “to allow a small problem or minor evil to grow unchecked until it becomes a serious threat or major disaster; to nurture an evil until it becomes a significant danger”.
虺:小蛇,毒蛇。指养奸遗患。比喻纵容敌人,听任其强大起来。而留下后患。