In his second year of junior high school, Zhibei drew a circle on the map of China and was determined to walk into that circle.
In the third year of junior high school, Zhibei met Huainan, and they happened to be in that circle, but the circle was smaller.
It had been many years since Zhibei met Huainan. It was not like the Huainan in Zhibei's impression, but more like a miss after 365 days, 3650 days...