What is the planning pattern of Huangdi Mausoleum, the imperial mausoleum in the pre-Qin period?

Huangdi Mausoleum is located in Huangling, Shaanxi. About the Yellow Emperor, according to legend, he is the ancestor of our Chinese nation, also known as Xuanyuan and surnamed Ji. Historically, he led the tribe to defeat Emperor Yan and Chiyou, and then there was stability and unity in China. However, these are all legends, but they are recorded in some historical books later, so the Yellow Emperor is recognized as our ancestor, and the Mausoleum of the Yellow Emperor was also built later. Huangdi Mausoleum is located on Qiaoshan Mountain in the north of the city. The cypress trees are dense on the mountain, and the meandering water lingers under your feet. The scenery is solemn. This mausoleum is only 3.6 meters high and about 48 meters in circumference. There is a pavilion at the mouth of the mausoleum, on which is written "Huangdi Mausoleum". There is also a tablet pavilion at the back, which is engraved with the words "Qiaoling Yulong". Later, the emperor came to sacrifice, and there were many inscriptions, which made the environment here more rich in the temperament of royal tombs.

About the death burial of the Mausoleum of the Yellow Emperor and the Yellow Emperor, can you read the historical records? "Closed Sutra": "The Yellow Emperor cast a bronze tripod and surrendered himself to the foot of Jingshan Mountain. When the tripod was finished, a dragon lowered its beard to welcome the Yellow Emperor. The Yellow Emperor rode on horseback, and there were more than 70 ministers in the harem. The dragon looked up. Yu Xiaochen can't go up, but he knows that he has a dragon beard in his hand, and the dragon beard is pulling and falling, falling with the bow of the Yellow Emperor. The people looked up to the Yellow Emperor and held his bow, so later generations called it Wu Hao because of its name Dinghu ... The next winter ... so they patrolled north of Shuofang, led more than 100,000 troops, and sacrificed to the Yellow Emperor to bury the bridge mound, thus releasing the soldiers. Shang said: I heard that the Yellow Emperor didn't die. Why are there graves today? Or: the yellow emperor has gone to heaven, and the ministers buried his clothes. "