User talk:Vack Xu
Welcome!
[edit]Hello, Vack Xu, and welcome to Wikipedia! I hope you like the place and decide to stay. Unfortunately, one or more of the pages you created, such as C14H12N6O, may not conform to some of Wikipedia's content policies and may not be retained. In short, the topic of an article must be notable and have already been the subject of publication by reliable and independent sources.
Please review Your first article for an overview of the article creation process. The Article Wizard is available to help you create an article, where it will be reviewed and considered for publication. For information on how to request a new article that can be created by someone else, see Requested articles. If you are stuck, come to the Teahouse, where experienced Wikipedians can help you through the processes.
New to Wikipedia? Please consider taking a look at our introductory tutorial or reviewing the contributing to Wikipedia page to learn the basics about editing. Below are a few other good pages about article creation.
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I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you have any questions, ask me on my talk page. You can also type {{help me}} on this page, followed by your question, and someone will show up shortly to answer your questions. Again, welcome! —Mint Keyphase (Did I mess up? What have I done?) 07:31, 19 March 2025 (UTC)
Wikipedia and copyright
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Hello Vack Xu! Your additions to Recreational use of dextromethorphan have been removed in whole or in part, as they appear to have added copyrighted content without evidence that the source material is in the public domain or has been released by its owner or legal agent under a suitably free and compatible copyright license. (To request such a release, see Wikipedia:Requesting copyright permission.) While we appreciate your contributions to Wikipedia, it's important to understand and adhere to guidelines about using information from sources to prevent copyright and plagiarism issues. Here are the key points:
- Limited quotation: You may only copy or translate a small portion of a source. Any direct quotations must be enclosed in double quotation marks (") and properly cited using an inline citation. More information is available on the non-free content page. To learn how to cite a source, see Help:Referencing for beginners.
- Paraphrasing: Beyond limited quotations, you are required to put all information in your own words. Following the source's wording too closely can lead to copyright issues and is not permitted; see Wikipedia:Close paraphrasing. Even when paraphrasing, you must still cite your sources as appropriate.
- Image use guidelines: In most scenarios, only freely licensed or public domain images may be used and these should be uploaded to our sister project, Wikimedia Commons. In some scenarios, non-freely copyrighted content can be used if they meet all ten of our non-free content criteria; Wikipedia:Plain and simple non-free content guide may help with determining a file's eligibility.
- Copyrighted material donation: If you hold the copyright to the content you want to copy, or are a legally designated agent, you may be able to license the text for publication here. Please see Wikipedia:Donating copyrighted materials.
- Copying and translation within Wikipedia: Wikipedia articles can be copied or translated, however they must have proper attribution in accordance with Wikipedia:Copying within Wikipedia. For translation, see Help:Translation § Licensing.
It's very important that contributors understand and follow these practices. Persistent failure to comply may result in being blocked from editing. If you have any questions or need further clarification, please ask them here on this page, or leave a message on my talk page. Thank you. — Diannaa 🍁 (talk) 14:49, 13 April 2025 (UTC)
Upcoming expiry of your ipblock-exempt right
[edit]Hi, this is an automated reminder as part of Global reminder bot to let you know that your WP:IPBE right which gave you the ability to bypass IP address blocks will expire on 20:48, 21 September 2025 (UTC). If your IP is still blocked, please renew by following the instructions at the IPBE page; otherwise, you do not need to do anything. To opt out of user right expiry notifications, add yourself to m:Global reminder bot/Exclusion. Leaderbot (talk) 19:42, 15 September 2025 (UTC)