User talk:2402:8100:385F:5F5F:FD52:66DE:1F0B:AF7A

May 2020
Please do not add or change content, as you did at List of metro systems, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Nguyen QuocTrung (talk) 18:19, 10 May 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.