What a skillful and eloquent expression!

Mu Xin also advises on the intricacies of becoming an authentic Shanghainese, stating, "One needs a 'pai' for support, 'paitou' for demeanor, and 'juxtou' for gimmicks." The 'pai' represents backing, 'paitou' involves attire and behavior, and with these in place, one can delve into the realm of gimmicks. Whether in official circles, business, romance, gambling, or dancing, every sphere is a world of gimmicks. This is exemplified in the households of common people, where there are Mr. Gimmick and Mrs. Gimmick, Young Master Gimmick and Young Mistress Gimmick, parents with their gimmicky children. "Artful words and captivating looks are good gimmicks, appearing loyal and honest is an even better gimmick. Call a young person a little rascal, and they won't get upset; call an older person an old rascal, and they won't take offense." "One word encapsulates the essence of a Shanghainese: 'juxtou'."

A "gimmick" generally refers to a clever or unique device, scheme, or strategy designed to attract attention, promote something, or achieve a specific purpose. Here are a few definitions:

1. Merriam-Webster:

   • Gimmick (noun): an ingenious and usually new scheme or angle.

2. Cambridge Dictionary:

   • Gimmick (noun): something that is not serious but is used to attract people's attention or interest temporarily, especially to make them buy something.

3. Oxford Languages:

   • Gimmick (noun): a trick or device intended to attract attention, publicity, or business.

In the context provided, the term "gimmick" is used to describe the various elements or tactics employed in different aspects of life in Shanghai, suggesting that these elements are attention-grabbing or distinctive in some way.

It seems there might be a misunderstanding or a transcription error in the provided text. The term "juxtou" does not correspond to a known English word or expression. It's possible that the original term is spelled differently or that it is a specific term related to a particular context or regional language.

If there's additional context or clarification on the term, or if you have an alternative spelling, I'd be happy to try to provide more information.