假如我的朋友李华借了我100块钱不还给我我该怎样要回来不会显得尴尬请帮我给李华写一封邮件。

Dear Li Hua,

I hope this email finds you well. I wanted to follow up with you regarding the 100 yuan that you borrowed from me a few weeks ago. I know things can slip our minds sometimes, but I was hoping you could let me know when I can expect to receive the money back.

I don't want to come across as pushy, but I also don't want to let the matter slide. If there is anything I can do to help you out in the meantime, please don't hesitate to let me know. I value our friendship and hope we can resolve this matter amicably.

Thank you for your understanding.

Best regards,

[Your name]