In my personal experience, I forgot my phone on the basketball court of Chinese university campus in 2015, and it took me four hours to remember. When I went back to look for it, it was still in its place. In this study, the owner was asked to contact the owner by email. However, Chinese people do not often use email, and they usually return the lost property to the lost and found office. I hope Science can be more rigorous in future research. Thank you.