"Operation Smith", originally known in English as "Mr. & Mrs. Smith". The surname "Smith" originated from the ancestor's occupation - blacksmith. It is a common surname in the United Kingdom and the United States, just like "Zhang" and "Li" in China. This film uses "Smith" as the protagonist's surname, which has a general, ordinary, and representative meaning. The computer agent in "The Matrix" is also named Smith, presumably for the same reason. Therefore, I doubt there is any reason not to translate it into "Mr. And Mrs. Smith" instead of "Operation Smith".
Conception: