Henceforth, the Green Hills Are Old Friends

Henceforth, the Green Hills Are Old Friends Plot:

Lin Xiaoman is the mountain guardian of Qingshan Village. Three years ago, she saved Gu Nanchuan, a painter who fell off a cliff while sketching, and they promised to "guard the green hills together". But Gu disappeared the next day, leaving only half of the painting *The Old Friend of Green Hills*. Three years later, a man identical to Gu comes with the complete painting, claiming to be Gu's younger brother Gu Beichuan. Yet he often shows Gu's habits—he helps her fix the old rope of her backpack and can accurately find her hidden osmanthus candy. It's not until Xiaoman finds Gu's diary in his luggage that she learns Gu disappeared on purpose to gather evidence of miners destroying the hills, fearing for her safety. When the truth comes out, standing on the top of the green hills, they finally understand: the deepest promise is to guard the hills with you, turning them into the oldest friend.