The purpose of Beidou is——
I will not offend anyone unless they offend me. If someone offends me, I will send you to a new life. I will chase you in heaven and pursue you in the Lingxiao Palace. I will pursue you in the sea and in the Crystal Palace. The golden-winged bird on Buddha's head will pull out the three feathers on your head.
Even if the mountains have no edges and the sky and the earth merge, even if the winter thunder shakes the summer rain and snow, Beidou will never lose.
And, this time, it's still a prequel.
Conception: