There's a meditation that the Theravada Buddhists do.

上座部佛经里有一种冥想。

Currently, it is the world's 4th largest religion, with over half a billion followers worldwide, primarily divided into two main overarching  categories: Theravada and Mahayana.

目前，它是世界第四大宗教，全球信徒超过五亿，主要分为两个主要类别：小乘佛教和大乘佛教。