Furthermore, any mineral resources extracted from public land are royalty free.

FORBES: Connect

However, the royalty rights on the land were retained and passed to Chevron.

FORBES: A Little Bit Louder Now, Chevron Starts To Shout About Davy Jones And The Ultra Deep

He believed that his ancestors had been royalty who were deeded land rights to that part of Hong Kong, and his calligraphic rants spelled out details of his family history, as if to publicly prove that the moniker he'd given himself -- the King of Kowloon -- was true.

BBC: Calligraphic graffiti in Hong Kong