Changes in the trade situation of traditional trade routes

The prosperous Tang Dynasty had a vast territory, and the Silk Road on the road was firmly controlled by the Tang Dynasty. Hu merchants from the western regions came to Chang 'an. Maritime trade is centered on Guangzhou, which is not as developed as land trade.

After the Anshi Rebellion, the national strength declined and the control over the western regions gradually lost. On the way to the Song Dynasty, the Silk Road was completely cut off by the summer in western Liaoning. The Maritime Silk Road has been valued and prospered.