U+1F21A "🈚" Squared CJK Unified Ideograph-7121 Unicode Character

U+1F21A "🈚" Squared CJK Unified Ideograph-7121 is a square-shaped ideograph representing the Chinese character "无" (wú), which means "none" or "without." Encoded in the Enclosed CJK Letters and Months block, this symbol is part of a set of squared CJK characters used in Japanese signage and mobile interface to indicate functions like "free" or "no charge" on buttons or in menus, as well as in other contexts where space constraints require a clear, compact label for the concept of absence.