This poem describes the spring willow flakes flying scenario poem, but also implies that the old man reunion, in the wind, the willow flakes with the direction of the wind, drifting left and right, the young old man with the world drifting left and right, and finally met today, may be a very long time, almost all the same person, that's why the use of "pedestrians open mouth smile", the original is the reunion of the old man, the poem is The first is a very simple poem, but it has a very deep meaning.
The last sentence is a double entendre, one is to say, the willow tree is like an old man, and the other is to say, the old man a goodbye for many years, and today we meet again, all have been wind candles, a smile to eliminate a thousand sorrows ah!