Hello, Hong Wei Qin. When you revert a user's changes, like you did earlier{{subst:#if:| to [[User:{{{user}}}|{{{user}}}'s]] edit}}{{subst:#if:| to the page "[[{{{page}}}]]"}}, don't forget to leave the user a message on their talk page, especially when reverting vandalism or a test edit. You may find Template:User talk page warnings/table useful when doing this, to let them know that the change was considered inappropriate, and to direct them to the sandbox. Thank you.
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