One window accepts, internal circulation, where does one stop come from?

From Dong Jieyuan, a traditional Chinese opera writer in the Jin Dynasty, "The Romance of the West Chamber in Various Palace Tunes", Xianlv Tunes Linjiang Xianyan Yaner's newly married party is happy, and she is worried about hearing Xiao Temple's sparse bells. Matchmaker makes you laugh. Furong, Wuji? The rain dispersed, and Song Yu's pillow was empty. ○ It's easy to say goodbye when holding hands, and new sorrows and old hatreds are endless. Su E has returned to the Crystal Palace, half a window is a thousand miles away, and a pillow is even windy.