<Tr> <Th_colspan="2"> Route information </Th> </Tr> <Tr> <Th> Time period </Th> <Td> Around 114 BCE--1450s CE </Td> </Tr> <Tr> <Th_colspan="2"> UNESCO World Heritage Site </Th> </Tr> <Tr> <Th> Official name </Th> <Td> Silk Roads: the Routes Network of Chang'an - Tianshan </Td> </Tr>

Where did the silk road start and finish