First of all, this problem goes back a long time. It is forbidden to sell popcorn in cinemas because it has an unpleasant smell and is not easy to clean. At that time, it was mostly candy. Later, the production of popcorn was improved, and the cost became lower. It was also a pleasure to eat popcorn while watching movies, which was gradually accepted by the world. And now popcorn has become a standard, which is very profitable. Wanda was exposed that the most profitable thing was popcorn.