function ConvNumber(const S: String): String;
const
ChnChars: array[0..9] of string = ('○','一','二','三','四','五','六','七','八','九');
var
i: integer;
begin
Result := '';
for i:= 1 to length(S) do
begin
Result := Result + ChnChars[Ord(S - Ord('0')];
end;
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