C452 The Bamboo Strips

Two days later, at noon, Yu Yin was tending to Huajun. Suddenly, a servant girl's voice sounded from outside, reporting, "Master, someone has sent a letter."

Yu Yin looked at Huajun and said, "I'll go take a look."

Huajun nodded.

"Who sent it?" Yu Yin asked as he took the letter.

"It was a black man," the servant girl lowered her head and said.

"Black man..." Yu Yin was puzzled