This is not scientific way to do the research, not considering culture diversity at all.
As many people said, Chinese people do not use email at all. Some people like my father, who asked the iPhone store to set up an apple id for him. Only 38% people use email, and most of them just use it during the work time.
We are more likely to message people instead of emailing.
Second, we are told that do not directly contact the people's information on their belonging. Because it might be a spam. Give it to the policeman or "lost and found" is the right behavior.
Many people like me do respect Science, which is most authorized educational magazine. So please retrieve this article!!