Please retract this article and issue an apology statement because of the infringement of the reputation for Chinese civil by publishing the article. The truth is — First, in China, we don't use email very often, using Wechat app to communicate instead. Therefore, the way of receiving responses in this study is not in line with China's situation and is unfair. Secondly, we usually have "lost and find offices" in every place — such as airports, hotels,restaurants — and we choose to wait for the owner to come rather than contact the owner. Why do you investigate the national conditions of Japan, but do not respect ours? Third, China is one of the largest cashless payment countries in the world, now in China, everyone uses mobile phones to pay, no one will take cash out, so it is rare to lose your wallet in China. I hope you could design an objective and fair experiment next time, and science magazine can make an objective and fair report! THANK YOU!