In some Chinese Buddhist temples, you can often see the big-bellied Maitreya (or big-bellied bhikkhu) modeled after the Budai monk. Here in Buddhism, it serves as a representation of Dharma education, which means "great quantity and great blessing" to remind the world. Learn to tolerate.
Sharing a real-life tutorial on the origami Maitreya Buddha by Vietnamese author Pham Ngoc Tuan. It is a classic image of a smiling Buddha with a big belly. If you are interested, you can learn from it.