The "lucky" small cookies have become extremely popular in American Chinese restaurants! The merchants saw a huge business opportunity in them.

When dining in Chinese restaurants across the United States, there is a small custom that the restaurant will give guests a crispy cookie with a note inside. People call it a "lucky cookie". Why does this tradition exist? What is written on the note inside the cookie?
Lucky cookies are a very interesting type of cookie. What makes them special is that they contain "luck". This thin and crispy cookie is casually shaped with two corners.
Because its bulging belly holds a piece of paper. The note usually contains a warm encouragement or a beautiful hint, sometimes with lucky numbers printed on it. When you open the lucky cookie, the content of the note you receive is completely random, which adds an element of fun to the lucky cookie.
For American diners, lucky cookies have become a part of dining in Chinese restaurants. Whether placed on the bill or put into the takeout bag, looking at the note inside the lucky cookie becomes a rather ritualistic thing before ending the meal.
Chinese restaurant customers: "Life is a test", it sounds like a good suggestion.
Chinese restaurant customers: I'm looking forward to lucky cookies. I like them and enjoy the fun of facing an unknown fate.
Chinese restaurant customers: I will leave only after getting a lucky cookie. I think I have already started to look forward to lucky cookies.
Reuters reporter Jen De Buck: For many Americans, tasting the traditional food is not just about enjoying the cookie itself, but more importantly, its intrinsic value.
Lucky cookies are made from very simple raw materials such as water, flour, sugar, and food coloring, similar to pancakes or ice cream cones.
However, this tradition of the after-meal small cookie did not originate from China. Historians say that lucky cookies first emerged in Japan and were brought to the United States in the late 19th century. Today, in the United States, this small cookie brings a big business opportunity for merchants. Yun Tou Food Company has been producing this cookie since the late 1970s, and its production has now increased tenfold compared to the initial amount. And the success of lucky cookies is inseparable from the mysterious words hidden in the notes on the lucky cookies.