Here is a fairy tale. During the Song Dynasty, a small local official from Henan was transferred to Guanzhong, rode a mule over the Qinling Mountains and changed his sedan chair in Zishui County. When he saw a white deer get off the sedan chair, he never saw it again. He felt incredible and asked the bearers their original names. The bearers said "Bailuyuan".
Half a month later, the little official personally bought the land where Bailuyuan appeared, built a house and monastery, moved to his home, and built a grave for himself. Later, his four grandchildren became scholars, one of whom was Prime Minister Zuo, and all four brothers died. Later, the emperor decided to build a shrine to commemorate the merits, built four brick towers, and wrote the title of "Si Lv 'an" with a pen. A descendant of Lu gave a lecture in the temple and hung up the sign of "Bailuyuan Academy".
It can be seen that this small official surnamed Lu in Henan has a lot of knowledge, at least knowing that the place where the white deer haunts is a treasure trove of feng shui. This has something to do with Bai Jiaxuan digging white deer plain and fairy grass in the back.
Bai Jiaxuan believes that the place where Bailuyuan Xiancao grows is a treasure trove of geomantic omen. In addition, the myth of White Deer and the legend of Lu Si in the past forced him to exchange the thin land with Lu Zilin. Coincidentally, the woman he married in the seventh room was named Cao Xian. With the blessing of these two gods, Bai Jiaxuan revived his family business and prospered.
Besides, Mr. Zhu, why did he choose the place "Silu Temple"? With his relationship with Fang Sheng at that time, it was not impossible to ask for a good place to worship the gods. Somehow, he told readers that Mr. Zhu was actually a white deer when he entered "Bailuyuan Academy".
Literary myth is not superstition, it links the cause and effect of the whole novel through the protection of Bailuyuan.
The above is just my personal understanding, just to show my vulgar knowledge.