Explanation: ① flowing water and floating clouds. ② analogy Xuanzhong disappearing things. ③ metaphor of natural flow, not rigidly stick. Source: SONG Hong consultative Kui "Zhang Ting Jun measures DPRK held" water line goes imaginative, light spirit of loyalty to. " Examples: Rongzhi loyalty to the light to deal with the ~. ★ Ming Tang, "Handan depravity"