What are the allusions in Songshan, Yanqing, Beijing?

Once upon a time, two brothers grew herbs in Shan Ye for a living. On this day, when the two brothers went up the mountain to plant medicinal materials, they found a big and fresh Anemarrhena asphodeloides. They have been planning medicine for so long that they have never seen such an excellent medicine seedling. They are very happy.

So they planed around the tree, and when they planed, the meat of Anemarrhena asphodeloides was exposed, as thick as a pole carrying water, and the two brothers were overjoyed.

Brother said, "Plan slowly, or it will be broken."

The two brothers slowly scraped the soil with their hands and found that Anemarrhena asphodeloides grew in a basin. The two brothers took out the basin and Anemarrhena asphodeloides. The elder brother poured the soil into the basin and asked the younger brother to take it to the river for cleaning.

After cleaning, they found that the basin was ordinary, and the color was not clear whether it was yellow or green, and some looked like stones.

After doing these things, the two brothers were hungry, so they picked up the dug-out basin and filled it with some water. The brothers eat dry food and drink water.

The water in the basin was gone, and it became full in the blink of an eye. It turned out that this was a cornucopia, and the two brothers were overjoyed.

Brother said, "Brother, we have to find a place to hide this cornucopia first." The two brothers thought about it and found five small pine trees under the hillside. My brother thought, buried under the Komatsu tree, first, it won't be found by others, and second, with this Wukesong as a mark, he won't forget the buried place. So the two brothers buried the cornucopia under five trees and went down the mountain.

When they got to the medicine collection place, the people who collected the medicine found that they were digging a Anemarrhena asphodeloides and gave them a lot of money. The two brothers happily took the money up the mountain to get the treasure basin, only to find that the mountain was suddenly covered with pine trees. The two brothers couldn't tell where the original five little pine trees were. After that, it became the Songshan Mountain in Yanqing.