What is in this image? Describe it in Simple English. As plain and simple as possible. No complex words, no long sentences. Still make sure to describe everything in the image.

This is a drawing of a scene in Mexico City. There are big words "Mexico City" at the top. The image shows two parts of the city. In the back, there are old buildings with big round roofs. In the very back, there are ancient pyramid ruins called pyramids under a cloudy sky. In the front, there is a person wearing a wide-brimmed hat. They are selling corn and other foods from a small cart. There is also a sunny umbrella above the cart.