Ji Lan couldn't survive the first half of his life, and was no better than an animal; after he survived, he had no sorrow or joy, and became a good person.
In the first half of Chu Ji's life, without Ji Lan, there would be no seven emotions and six desires, and no seven sins.
People give up their favorites to show how powerful restraint is, and those who wear a veil and rouge to see are the ones who care.