Why was Yongzheng buried in the Qing Xiling after his death?

According to the records of the Qing Dynasty, 1729, in the seventh year of Yongzheng's accession to the throne, this treasure was discovered at the foot of Yongning Mountain in yi county, and construction started the following year, which lasted for six years, and Tailing was completed.

Yong Zhengdi was an unconventional and fearless emperor. It is not ordinary courage for him to carry out drastic reforms, clean up the lost government of the former dynasty and break the system of being buried with his father. Throughout the Qing Dynasty, Yongzheng was also an emperor with numerous rumors and mysteries in unofficial history, usurping the throne and seizing power. The guillotine and Lv Siniang, Yong Zhengdi in the novel, have a lively and confusing life, while the real Yong Zhengdi works hard and diligently. Yan Chongnian wrote two mysteries about Yongzheng: succession and death. It is widely rumored among the people that Yong Zhengdi chose another mausoleum because he usurped the throne and was ashamed to see his father. As unofficial history said in his novels, he should have fun.

Yongzheng's move caused a little trouble to Qianlong, but it was easy for a troublemaker who loved to travel. After careful consideration, Qianlong skillfully followed the ancestor's system of "Zhao and Mu learn from each other", but this time Dongling was Zhao and Xiling was Mu. He stipulated that if the father's mausoleum is in Zhao, the son's mausoleum is in Mu, and so on, it is always right for the grandson to accompany his grandfather. Although several emperors did not follow this system later, such as Daoguang, they should have gone to Dongling and finally came to Xiling, which is another story.