What do the epigrams such as Buji, Partridge Sky, Bodhisattva Crossing the River, Stepping on Shakespeare's Foot, and Dream in a Dream mean?

Bodhisattva Man: Jiao Fang's original song title, also known as Midnight Song and A Cloud in Wushan. According to records, in Xuanzong of the Tang Dynasty, the female barbarian country paid tribute, wearing a high bun and a golden crown, so it was called Mandui Bodhisattva, and musicians wrote Manqu Bodhisattva. Like a dream: it was created by the Li school in the Tang Dynasty and named after the word "dream, dream". Partridge sky: It is said that the word name is taken from Zheng Yu's poem "Spring outing, chicken and deer stuffed, home in partridge sky". A trip: Shan Ye, Hunan Province recorded a cloud: "Lai Gong wrote Yuefu Ci for workers to sing because of his early spring banquet." In addition, the word method (Jiang Nanchun) notes: "Or: This depends on the public to compose music without an author." It can be seen that Lai Gong was able to compose his own music at that time. What this word sings, late spring, sedge falling leaves, stepping on incense, writing scenery and lyricism, is the creation of this song, almost thanks to Gong. Cutting down mountains by Yilin: "Han Yi's poem:' Crossing the Spring Stream on the Sand'"; The word name (stepping on the sand), that's it. "It is also known that Lai Gong actually took Korean poetry as a noun. Moreover, "walking in the sand", "walking in the street" and "walking in the distance" are also different from Yuefu songs. (See "The Origin of Ci Rhythm": This song was popular in the Northern Song Dynasty. Wanshu's rhyme is thought to be from "fortune teller".