<Tr> <Td_colspan="2"> 萬里 長城 </Td> </Tr> <Tr> <Td_colspan="2"> The Great Wall of China at Jinshanling </Td> </Tr> <Tr> <Td_colspan="2"> Map of all the wall constructions </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr>

When did the great wall start and finish