This work is an early version of Part 2. I may continue updating it, so you can keep reading. Part 2 follows their story, while this one is just a rough, imperfect version, though it's not bad either.
The two of them had been close friends since childhood. When their university teacher said they would be studying abroad in different places, they each went their own way. During their time abroad, they made lots of friends. They didn't return to China until their university classmates' reunion. By then, both of them had changed a lot: their height, their voices, their hairstyles, and so much more. When they got together, it felt as if they had gone back to childhood.
Theme: Study hard, and you too can achieve what they have.