The hot summer has finally come to an end, and it hardly rains during the entire summer holiday in Yuchuan. The mother of the two young men has just checked in at the international airport. She has bought a first-class ticket for herself, but aunty refused to let the two men take the first class because she wanted them to travel in the economy class. She is very happy to see her son and daughter-in-law off, and she plans to take a cab and a train to Philadelphia to pick them up and take them to Washington, D. C.