I have never understood why... On the Wangxiang Tower at the end of the bridge, there are those endless cries of human souls, all calling for the hometown in the world.
Po Meng once answered me: That's because people don't live forever, so they remember hardness even when they are suffering, and they remember hardness even when they are happy. Seeking but not suffering, in the end, the attachment is too deep, the love and hatred are too deep.
In fact, for thousands of years, who can know who's suffering...
Intention: