cóng shàn rú dēng,cóng è rú bēng
比喻学好很难,学坏极容易。
《国语·周语下》:“从善如登,从恶是崩。”
从善如登,从恶如崩作宾语、定语、分句;用于劝诫人。
It's difficult to follow the path of virtue but easy to succumb to vice.