Lin Xia, a 26-year-old financial practitioner, moved into an old bungalow on Yuyuan Road, Shanghai, and accidentally discovered a north wall full of writing hidden behind the wardrobe - it was a diary left by former tenant Su Xiao in 2023. She couldn't help but write a reply, and actually received a reply\\\\\\\\\\\\\\"\\\\\\\\\\\\\\\": This wall has the transmission function across three years. She and Su Xiao in 2023 started a conversation through a wall.
The ending is not the cliché of "finding the other person and crying".
Mission: Urban healing