This question is related to a particularly lofty word - "Zhao Mu Zhi"! The Zhaomu system is actually a kind of etiquette created by the ancients. According to the "Li" of Zhou, the most important etiquette collection in ancient times, the so-called "Zhaomu system" refers to the arrangement order of ancient ancestral temples. Specifically, That is, the emperor built seven temples, the princes built five temples, the officials built three temples, the scholars built one temple, and the common people had no temples. Furthermore, the popular point is to distinguish the levels according to the number of temples built! This "Zhao Mu System" also extends to the funeral order and the placement order of the God's Lord Cards after death, in order to distinguish the "level" in the family, that is, who is the ancestor and who is the grandson.
The imperial tombs of the Qing Dynasty were built according to this "Zhao-Mu system", but the construction was a bit "chaotic". At the beginning, Emperor Shunzhi chose the Eastern Tomb of the Qing Dynasty (today's Zunhua, Hebei Province) as his final resting place (Xiaoling Tomb). This place is the den of dragons and tigers and a treasure of Feng Shui. When Kangxi arrived, he strictly followed the Confucian "Zhao-Mu system", "the son is buried with the father", and built his Jingling Mausoleum with his father's Xiaoling Mausoleum as the center on the left side.
After Kangxi died, Yongzheng ascended the throne. According to the ancestral system, Yongzheng should have built his mausoleum in the Eastern Tomb of Qing Dynasty, and according to the "Zhaomu System", his mausoleum should be centered on the Xiaoling Mausoleum. Built on its right. However, our fourth elder brother actually did the opposite and broke the ancestral system. Instead of building his mausoleum in the Eastern Tomb of Qing Dynasty, he opened a new cemetery and was buried in what is now the Western Mausoleum of Qing Dynasty.