User talk:Yifan is a wu48

April 2020
Hello, I'm Greyjoy. I wanted to let you know that one or more of your recent contributions to Energy flow (ecology) have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks.  Grey joy talk 08:24, 29 April 2020 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did at Energy flow (ecology). Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you.  Grey joy talk 09:30, 29 April 2020 (UTC)