His words made Gu Yusheng go quiet for a while, then he opened his mouth, saying in an emotionless tone, "I don't know."　　

"But..." Gu Yusheng stopped after one word and frowned.　　

The person he had been communicating with was named 'A.'

From the letters he had received from A, it could be inferred that it was him who had sent the first letter to A.　　

But in his impression, it seemed a part of his memory was lost. He simply couldn't figure out why he had sent a letter to A at the very start.　　

Due to family affairs, he had been unwilling to tell his inner feelings to others and felt it was embarrassing and unnecessary. He thought that he might initially have just wanted to find an irrelevant pen-pal to vent his feelings to and had also nicknamed himself as 'S.'　　

For whatever reason, the person had even accompanied him for years... Even if S and A had never met and didn't really know each other, over a long time, A had given S a lot of authentic and subtle warmth.　　

Gu Yusheng t