Recently I met an old classmate online. After a bit of catching up, she began to诉bitterness to me. It was like this: She works for a big enterprise. Recently two colleagues launched "love offensives" on her. One is a local boy who earns nearly 5000 yuan per month. The other is a young man from the United States. The American's monthly salary is a bit lower, only 3000 yuan, but if marrying him, after living in America for a while, she can get a U.S. green card, which many people desire for...