"I wonder who plays the flute in the sky and blows down the beautiful flowers all over the world." Whose poem is this?

Yongxue (Yuan Dynasty) Wu Chengla turned to Hongjun and was already dying. ① The east wind cut the water under the Temple of Heaven. What was left was the thousands of rivers of Wu and Chu. ② Overwhelmed the thousands of miles of Qinhuai Mountains. The bamboos whirled in the wind and the silver phoenix danced. ③ Clouds The pines are cracking and the jade dragons are cold. ④ I don’t know who plays the flute in the sky and blows down the green flowers all over the world. Notes ① La: the twelfth lunar month, the twelfth month of the lunar calendar. Hongjun: refers to the changes in nature. ②...