Is the way Mei succeeded to the throne justified?

They were written in Manchu and Mongolian in China, and they can't be changed if they want to. Legend has it that the May 4th Movement changed "May 4th Movement" to "May 4th Movement" is sheer nonsense. Because the ancient word "Yu" is written as "Yu", historians believe that this legend should be deliberately fabricated by the Eight Ye Party. As you know, Kangxi seized power in Kowloon in his later years. No matter who acceded to the throne, someone would refuse to accept it. Moreover, in his later years, Kangxi gave Long Keduo the most important position in the Nine Magistrates (Tong Guifei's brother was an uncle in May and was adopted by Tong Guifei in May), which shows that Kangxi wanted to ensure the throne in May. Do is in control of the connection between the Forbidden City and the outside world, whether the palace door can be opened or not, do is in charge. Moreover, Kangxi liked Ganlong very much and taught him himself.

As for the fact that Yongzheng was not buried in Xiling after his death, historians have not made it clear, so I really want to know!