User talk:Duomo Feng

Welcome to Wikimedia Commons, Duomo Feng!

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-- Wikimedia Commons Welcome (talk) 07:51, 28 June 2022 (UTC)

File:The impact of critical embankment velocity in railway engineering.png

Hi Duo, I've fixed the license of an image you uploaded. It is indeed public domain so it can stay on Commons, but since you're not the author we have to use PD-chart (which is fine for "simple charts and graphs") instead of CC-zero (that can be used for image you created or for image that were published in cc-zero). Jaqen (talk) 12:12, 29 June 2022 (UTC)