code: def is_chinese_char(cp):
      """Checks whether CP is the codepoint of a CJK character."""
      # This defines a "chinese character" as anything in the CJK Unicode block:
      #   https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block)
      #
      # Note that the CJK Unicode block is NOT all Japanese and Korean
      # characters, despite its name. The modern Korean Hangul alphabet is a
      # different block, as is Japanese Hiragana and Katakana. Those alphabets
      # are used to write space-separated words, so they are not treated
      # specially and handled like the all of the other languages.
      return (
          (0x4E00 <= cp <= 0x9FFF)
          or (0x3400 <= cp <= 0x4DBF)
          or (0x20000 <= cp <= 0x2A6DF)
          or (0x2A700 <= cp <= 0x2B73F)
          or (0x2B740 <= cp <= 0x2B81F)
          or (0x2B820 <= cp <= 0x2CEAF)
          or (0xF900 <= cp <= 0xFAFF)
          or (0x2F800 <= cp <= 0x2FA1F)
      )
  
imports: import unicodedata
label_desc: Use image node_id 4 for calling a global function with example usage: is_chinese_char(cp) and returns: unknown