All the disturbances in the world are like the leaves flying in the air. Because of the wind, the leaves rise and fall. If all of us really see through the mortal world and are not troubled by the seven emotions and six desires as the Buddhists say, then the world will not be as lively and interesting as it is now, let alone Liang Shanbo and Zhu Yingtai dancing together as butterflies, or the beautiful love story of White Snake and Xu Xian.