And the cause of Dharma's death at that time is a mystery. Some people say that he was poisoned by jealousy six times by a monk in the Northern Wei Dynasty, but he didn't poison Dharma, but Dharma soon repented of something and died. Others say that Buddhism "belongs only to the west" and goes to the western paradise to practice Buddhism.
However, it is recorded that when the envoys of the Northern Wei Dynasty returned to Luoyang from the Western Regions two years after the death of Dharma, they met Dharma on the way. At that time, Dharma went west with a shoe in one hand and bare feet. Song Yun saw this and asked Dharma, "Where is Master going?" Dharma replied, "I'm going to the Western Heaven. When you return to Beijing, don't say you saw me, or there will be disaster. " This is also why some people say that Buddhism went to the Western Heaven to practice Buddhism.
In fact, no one knows how old Buddhism is. After all, he kept saying that he was 150 years old from beginning to end. No one knows whether this is true or not.