Childe's return to traffic means that Childe will return soon, and the traffic is very busy. This poem depicts a very vivid scene. After the news of his son's return came out, people came to meet him. There is an endless stream of traffic on the road, and the horses scream and shuttle through it, just like running water. It is an ancient poem that childe is busier. This poem expresses people's warm welcome and joy for their son's return.