As a supermarket operator, we must know the "golden display position" of supermarket shelves: the average height of Asians is 160-4250px, so customers' eyes are mostly concentrated in the range of 100-3750px, that is, the third and fourth floors of the shelves, so it is easier for customers to find popular goods first. People's eyes are always used to browsing the goods on the supermarket shelves from top to bottom and from left to right, so putting the hot goods with high profits on the right side of a row of supermarket shelves is more helpful to promote the sales of hot goods and bring high profits to supermarkets.