Bill had just arrived from the United States to study engineering at a Chinese university. In the first few days he met and moved in with his roommate Zemin. Over the next days he noticed that female students on campus frequently walked arm-in-arm or even holding hands. He noticed, too, that students of both sexes, especially the boys, would huddle around newspaper displays in a fashion of close contact. Bill felt rather uncomfortable and wondered how he would respond if one of his classmates were to put his arms around.