What do you mean, early attachment to children and late peace?

This is the fortune teller's statement: smart, proficient in civil and military affairs, early birth, late birth and peace. Harmony between husband and wife is beneficial to wealth, prosperity in old age, and virtuous development in women. Having children early and keeping them safe late means having children early and enjoying happiness early, while having children late is safe for adults. This is an obvious strategy of blocking both ends.