The article is the source of this sentence, and your own good wife is someone else's good.

According to an interview with Wang, Jiang Qing also came to Lushan from Guangzhou. Coincidentally, someone called to tell Jiang Qing that the clouds in the sky were coming and asked her to take pictures quickly. It is said that they waited for dinner after swimming that day, but did not wait for Jiang Qing. Jiang Qing came back and said angrily, "The article is her own good, and the wife is someone else's good." So, Mao Zedong smiled at that time, and wrote a poem "Looking at Jinsong at dusk" for Jiang Qing's photo in Lushan Fairy Cave that day to please Jiang Qing.