Sending Two Ambassadors to Anxi in Yuan Dynasty is a poem written by Wang Wei, a poet in Tang Dynasty, when he sent his friends to the northwest frontier. The first two sentences of this poem describe the time, place and atmosphere of farewell. Three or four sentences are a whole, and the toast that the host seems to blurt out is a concentrated expression of the strong and profound sense of farewell at this moment. This poem describes the most common parting. It has no special background, but it has its own deep feelings of farewell, which makes it suitable for most people to sing outside the banquet, and later it was compiled into Yuefu, becoming the most widely circulated and longest-lasting song.