Why is Zhuang Fei's Zhao Qianling not built in the Feng Shui wall of Qing Dongling?

The tomb of Empress Xiaozhuang Wen is called Mausoleum, which shows that it is still a system with Zhaoling, that is to say, she is still subordinate to Emperor Taizong. Then why is this mausoleum not buried in Dongling, Qing Dynasty, but just left outside the city gate? It's not hard to explain. The emperor shunzhi Fu Lin's mausoleum is the main mausoleum of the Qing Dynasty. Located at the southern foot of the main peak of Changrui Mountain, the Mausoleum of the Qing Dynasty is the supreme aristocratic family in the Mausoleum. The Mausoleum of the Qing Dynasty is different from the Zhaoling Mausoleum and must not be confused. If Zhao Xi's mausoleum is built in the Feng Shui wall of the Qing Dynasty, the two systems will be unfairly disturbed, while Zhao Xi's mausoleum, in my heart forever, built anywhere, will be inferior to his son's mausoleum, which is against heaven.