User talk:Miao870714

November 2017
Hello, I'm CityOfSilver. I noticed that you made a change to an article, List of metro systems, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you.  City O f  Silver  17:47, 28 November 2017 (UTC)

February 2018
Please do not add or change content, as you did at AIDC F-CK-1 Ching-kuo, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Adamgerber80 (talk) 19:50, 18 February 2018 (UTC)

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