My wife, whose surname is Qi, has given birth to twins, a boy and a girl. Please help me name the two children. Thank you.

Qi Yuexin: Happy. Suitable for girls' names. From the poem "Hualin Garden Collection of Emperor Wu of Jin Dynasty" by Yingzhen of the Jin Dynasty: "The good harvests are full of beauty, the pods contain the fragrance, the soil is salty, and the people are happy."

Qi Detao: Have a military strategy. Suitable for boys' names. From Li Deyu's "Collection of Li Wenrao" "If you don't work on Sun Tzu's method, you will be too complacent."