The spirit body and the emancipator cannot disobey the angel's command.
So the "price" Leng Qingzhu said was to make Xia Chulin an angel and then destroy this ghost place.
Something unexpected happened
…
"Lengqing Marsh, I'm a little reluctant to destroy this place, what do you think?"
"I am forever loyal to you, my angel."
Purpose: Ushering in a new light