The whole sentence is: he is forced by him, and the breeze blows the hills. He let him pass, and the bright moon shone on the river.
The original text is as follows:
At this moment when all is silent, Zhang Wuji suddenly remembered a few words in "Jiuyang Zhen Jing": "He forced him, and the breeze blew over the hill. He let him pass, and the bright moon shone on the river.