User talk:Songyanran

Welcome
 Hello, Songyanran, and Welcome to Wikipedia!  Welcome to Wikipedia! I hope you enjoy the encyclopedia and want to stay. As a first step, you may wish to read the Introduction.

If you have any questions, feel free to ask me at my talk page – I'm happy to help. Or, you can ask your question at the New contributors' help page.

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Songyanran, good luck, and have fun. Stinglehammer (talk) 14:14, 12 November 2019 (UTC)

December 2019
Hello, I'm Materialscientist. I wanted to let you know that one or more of your recent contributions to Global health 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 help desk. Materialscientist (talk) 11:10, 5 December 2019 (UTC)