This is a languages test page. The following paragraphs are marked up for Chinese (lang=”zh”). These can be used for testing the accent of a screen reader. The two letter language code in the lang attribute should match the language the text was written in.
The paragraph in English (lang=”en”)
If a language isn’t specified, the screen reader will read the page in the user’s default language. That may result in a bad accent that’s difficult to understand. To specify a language for the page, add the ‘lang’ attribute to the HTML tag. For example: html lang=en.
Paragraph in the Chinese language (lang=”zh”), simplifed (zh-Hans):
如果未指定语言，屏幕阅读器将使用用户的默认语言阅读页面。这可能会导致口音难懂。要为页面指定语言，请将“lang”属性添加到 HTML 标记。例如：html lang=zh.
Paragraph in the Chinese language (lang=”zh”), traditional (zh-Hant):
如果未指定語言，螢幕閱讀器將以使用者預設的語言閱讀頁面。這可能會導致口音不好，難以理解。若要指定頁面的語言，請將「lang」屬性新增至 HTML 標記。例如: html lang=zh.
The key to getting NVDA to speak non-Latin languages is to switch to voice synthesizer like eSpeak NG that is more multilingual. It can be done under Preferences > Settings > Voice > synthesizer. The default MS OneCore voices sound good for American English but don’t support a lot of other languages. The Hong Kong Blind Union has an addon for NVDA that can allow it to better speak Chinese.
Resources
ISO 2 Letter Language Codes reference
ISO 639.2 Codes for the Representation of Names of Languages