U96f7 U5b89 U8f66 U6587 U8d85 U7ec6

U96f7 U5b89 U8f66 U6587 U8d85 U7ec6. String.touppercase() 安 string.tolowercase() 安 character.unicodeblock: It is encoded in the cjk unified ideographs block, which belongs to the basic.

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