Mo Dao Sang Yu's old age was heavy and sunny.

"Sang Yu is late, but the sun is shining on earth" comes from two poems, which mean that people still cherish it, not that Sang Yu is late. Generally used to describe venerable old people.

"It's late in Sang Yu, but it's still full of sunshine" comes from Liu Yuxi's "Appreciating the Happy Old Man", which is a metaphor for the sunset in Sang Yu. It means: Don't say it's very late in Sang Yu on Sunday, and the sunset glow can still shine all over the sky. Here, the poet expresses an open-minded, optimistic and positive attitude towards life with a charming and affectionate metaphor.

"Skynet is long, but not leaking", from Li Shangyin's Sunny Night. These two poems describe the scene and feelings of a sunny night after a heavy rain. Youcao has recovered its vitality because of the favorable weather, so it is said that "God's will" is pitying it. It's already evening when it clears up, and the time is short, but the poet still cherishes it, because it appears after a long-term expectation. When the poet wrote this poem, it was after many ups and downs and unfortunate experiences that he got a satisfactory home, so he used this poem to express his temporary satisfaction with the status quo.