If the interface opens in Chinese, you can change the language to English via the settings menu (the icon that looks like a gear or the "Settings" tab) and then restarting the app.
To download the file safely, you should always use the official source to ensure you are getting the latest, uncompromised version of the software. Official Download Source Download v2rayN zip
Because it is a proxy tool, some antivirus software may flag the .exe as a "false positive." It is recommended to download only from the GitHub link above to avoid actual malware from third-party sites. If the interface opens in Chinese, you can
Click on the .zip link for the latest version (usually tagged as "Latest") on the GitHub page. If the interface opens in Chinese