I only remember there is a principle is: you want to promote a 48 yuan dish, that must be in front of it in the row there is a non-main promotion of the higher price of the dish, at least 68 or 78 yuan or something like that. You can notice that there is a difference between these two places, their environment, location, restaurant style and class are very different. So the price that customers are willing to spend is not in the dish itself, but more importantly, the things behind it that make customers willing to pay more.