What are the legends about the "sacred tree" of the Qing Yongling Mausoleum?

There is a "holy tree" in the treasure city of Qingyong Mausoleum. There is another legend about this tree. Nurhachi's grandfather came down from Changbai Mountain with his ancestors' bones on his back. It was very late when we walked to Yongling. But people at that time were superstitious, and when they saw him carrying the urn, they wouldn't let him stay in the store. Nurhachi's grandfather stood helplessly by the roadside, looking up at the north. Suddenly, he found a stout elm and a branch at the foot of Qiaoshan Mountain, so he put the bones of his ancestors on the branch. The next morning, Nurhachi's grandfather found that the bone had grown on the tree and could not be taken down. At this time, a Feng Shui master told him, "This is a treasure trove of geomantic omen, and the mountain behind it is Long Mai. As long as you put your bones in the middle of Long Mai, your descendants will be the sons of heaven. " Feng Shui master also predicted that his descendants would have a world of 12 generations. Later, after calculation, from Nurhachi's accession to the throne to the last emperor of the Qing Dynasty, Puyi happened to be 12 emperors.