His military support ensured a non-violent transfer of power between the Kangxi and Yongzheng emperors .
The biggest mystery surrounding Longkodo is the exclusive attention the Kangxi Emperor gave him before his death .
Longkodo 's military support ensured a non-violent transfer of power between Kangxi Emperor Kangxi and Yongzheng emperors .
The biggest mystery surrounding Longkodo is the exclusive attention the Kangxi Emperor gave him before his death .