One Night Sticker is one of the representative works of a calligrapher in the Song Dynasty?

1. Su Shi

2. Yan Zhenqing

Correct answer: Su Shi

"A bosom friend knows a long time", also known as "One Night Post", is a letter that Su Shi wrote to his good friend Chen Jichang when he lived in Huangzhou (now Huanggang, Hubei).