Chen Mo, a blind masseur, tapped his knuckles on the ground and used the echo to draw a map of the streets in his mind. Lin Xiao, a guide dog trainer, still maintains a listening attitude even after losing her sight. Her fingertips are sharper than her eyes.
Every evening, Lin Xiao passed by the massage parlor and used his blind stick to knock out three short and one long - that was their agreed code. Chen Mo followed the sound and asked her to walk through the traffic while holding his shoulder. And Lin Xiao's hands could always accurately find the stiffest acupuncture points on his shoulders and neck after a day's work.
One used his voice to guide her, and the other used his hands to relieve his fatigue. In this world where no light can be seen, they became each other's only light.
