Why is Xiao Zhuang Mausoleum outside the red wall of Qing Dongling Mausoleum?

There are three main reasons:

Empress Xiaozhuang Wen was the concubine of Emperor Taizong of the Qing Dynasty. According to the rules, she should be buried with her husband, that is, moved back to Zhaoling in Shenyang. But she doesn't want to go back, because her son and grandson are in the Qing Dongling.

Shunzhi has been buried in the Feng Shui wall of Dongling, with the mausoleum in the middle. Xiaozhuang is his mother, with higher qualifications. If buried in Dongling, how can he get the right position? So Kangxi has been hesitating, not knowing where the mausoleum was built, but building a temporary Anfeng Hall and tearing down the palace where his mother lived before her death. How deep this feeling is.

Kangxi has been thinking about this problem all his life. How to solve it not only fulfilled his grandmother's wish, but also did not affect generations in the Feng Shui wall. Until my death, I didn't come up with a way to kill two birds with one stone. As a result, Yongzheng succeeded to the throne and it was solved immediately. Because Yongzheng and his wife have no feelings, everything is based on saving money. Build a mausoleum in the temporary Anfengtang and finish it directly.