Which ancient Chinese work, dating back to the 4th century BCE, provides detailed descriptions of the geography and peoples encountered along the Silk Road?

The ancient Chinese work known as the “Records of the Grand Historian” (Shiji) by Sima Qian, completed around 100 BCE, provides detailed descriptions of geography and peoples encountered along the Silk Road. Although it was written a bit later, it includes accounts of earlier travelers and the Silk Road’s significance.