[css-flexbox-1] The demonstrated non-English characters are Kanji(Chinese) characters (borrowed by Japanese)

https://drafts.csswg.org/css-flexbox-1/#flex-flow-property

**"Note that the flex-flow directions are writing mode sensitive. In vertical Japanese, for example, a row flex container lays out its contents from top to bottom, as seen in this example:"**

-- This needs to be updated, as people with elementary knowledge know that they are Chinese characters as soon as they read this...