The imperial concubine guessed three numbers: guess the number, and the answer should be: 1, 7, 9. Because generally speaking, the imperial concubine in the riddle first thinks of Yang Guifei. The word Yang is homophonic with the number 1, so I guess the number is: 1. The imperial concubine is the wife of the emperor. The word wife is pronounced the same as the number 7, so I guess the number is 7. The imperial concubine is especially famous for being drunk. The word wine is pronounced the same as the number 9, so I guess the number is 9. So according to the hint in the riddle: imperial concubine. Guess three numbers: guess the number, the answer should be: 1, 7, 9.