Ye Shan successfully upgraded from a high-power light bulb to become the third party between Lin Yuan and Lan Yan.
Despite the reputation of being gay, Lan Yan asked to pursue her.
This is the past...
Lan Yan finally kicked Ye Shan.
This was later...
One day many years later, Ye Shan met Lan Yan on a blind date.
This is the beginning of the story...