Browser Test Page for Unicode Han Character 'holy, sacred, sage; simplification of 堊 chalk; daub with chalk' (U+57A9)
You need a font that supports this character to even have a hope of seeing it correctly in the browser.
See the local font list tool
and font support page to see if you have a font that supports it!
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Image
Server-generated
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垩
Decimal Escape
垩
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