巫山云雨

Explanation: Originally referred to the ancient myths and legends Fairy Xingyun rain thing ◇ Huan said men and women together. 　　Source: Warring States Chu Song "Gaotang Fu Xu" concubine Yang in Wushan, Takaoka of resistance. Once the asakumo the morning, as the line of rain, day and night, under the balcony. "