This is another of the wacky spy satires that appeared in the mid- to late-sixties. Jerry Cornell (unrelated to Jerry Cornelius, Moorcock's other spy protagonist) is a con-man who finds himself employed by one of Great Britain's intelligence services. Through many misunderstandings, he is thought by a Chinese intelligence officer to be a virtual super-hero who must be eliminated, but instead ends up eliminating himself.
The book is written well enough, but the plot isn't particularly original, and the jokes fall flat.
One month before I read this book, I read "The Liquidator" by John Gardner, and it is incredible to see how similar the two novels are; I'm not saying either author plagiarized the other, I think the vibe going on in England at the time ended up giving the two authors similar ideas.