is mid august a good time to visit silk road

This ancient road begins at Chang'an (now Xian), then by way of the Hexi Corridor, and it spreads all over the Xinjiang Uygur Autonomous Region, and then they extend as far as Pakistan, India and even Rome. It is such a long road passing through so many areas and the weather varies in different areas. Which area would you want to visit? Generally, it is hot and dry during August along the road.