After the death of Princess Fukang.
"The Lonely City is Closed" and "Qing Ping Le" are fellow writers, and they can write whatever they want.
The description of Cao Ping in the original book: "After many years of separation, he still looks like the boy from Wuling in our memory. His horse is lightly dusted, and his fragrant sleeves are half-cageed. The princess stood silently, watching him go away, watching him return with twilight smoke floating in his arms."
Intention: None