Jade Carved from Mountain Stone

[Two female leads + mutual devotion + cool, impartial immortal lord x sweet, frail young lady]

When Qi An first met Lin Qining and learned about her condition, she only felt a little sorry for her and lent her a hand. She moved into the City Lord's manor to investigate the demon clan. As she treated Qining, she gradually began to worry about her, care for her, and feel drawn to her. The two slowly fell in love. After they got together, Lin Qining's health began to improve, but then the demon clan attacked her, leaving her on the brink of death... Send me 50 yuan and I'll keep telling you what happens next.

(I can't write a proper blurb. Please read the story.)