About Chinese Symbols
This collection is fourteen characters that form seven matched pairs, and they are not interchangeable decorations. In Chinese and Japanese typesetting each pair has a specific role — one marks book titles, another marks quotations, another marks editorial insertions. Picking the pair that fits what you are framing is the difference between looking deliberate and looking arbitrary.
What Each Pair Is For
【 】 lenticular brackets, filled. These are the heaviest pair and are used for headings, labels, and tags — the kind of thing that sits at the front of a line to categorise what follows. This is the pair most often used around a username, and the choice is a reasonable one: labelling is exactly their job.
《 》 double angle brackets, used for the titles of books and complete works. 〈 〉 the single form, used for the titles of articles, chapters, and shorter pieces contained within a larger work.
「 」 corner brackets, the standard quotation marks, with 『 』 as the doubled form for a quote inside a quote. 〔 〕 tortoise shell brackets, used for editorial insertions and notes. 〖 〗 the outlined lenticular pair, a lighter counterpart to 【 】.
They Occupy a Full-Width Cell
Every character here comes from the CJK Symbols and Punctuation block, where glyphs are designed to fill a full-width square so they align with Chinese and Japanese characters. That square is roughly the width of two Latin letters.
Wrapping a Latin name in them therefore costs more visual space than it appears to — 【Name】 is noticeably wider than the same word in square brackets, which can push a username over a length limit or look loosely spaced in a narrow field.
The count is separate from the width. Each bracket is one Unicode character, so a platform counting characters sees two for a pair even though they look like four letters' worth of space.
Overlap and Alternatives
The corner brackets 「 」 『 』 also appear on the Japanese symbols page, because these are shared CJK punctuation used in both writing systems rather than characters belonging to one.
If the full-width spacing is the problem, the ornaments on the decorative symbols page frame a name at normal letter width, and several exist in matched solid and hollow pairs.
All fourteen are plain text characters that take the colour of the surrounding text, and CJK font coverage is standard on current phones and desktops.