"£"This type of character is the escape sequence of SGML-like languages ??such as HTML and XML. Its specific escape type is the Unicode code point of HTML.

The escaped meaning of "£" is "?" (the abbreviation of pound, which is a currency symbol)

Extended supplement:

Taking HTML as an example, there are three escape sequences, all called character references:

Character Entity Reference, followed by a predefined entity name, and the entity declares the character it refers to.

Numeric Character Reference (NCR).

Unicode code point (number value is the target character), starting with "&#" followed by decimal digits, starting with "&#x" followed by hexadecimal digits.

Starting with HTML 4, NCR is based on Unicode, regardless of the document encoding. The two characters "China" are the Unicode characters U+4E2D and U+56FD respectively. The code point values ??"4E2D" and "56FD" expressed in hexadecimal are "20013" and "22269" in decimal.