what dynasty invented the firelance
Firelance: Invented during the Tang dynasty, it was the flamethrower of their generation. Using gunpowder, it shot a mixture of fire and projectiles up to 40 yards. Grand Canal: Completed by Sui Yangdi during the Sui dynasty, it was built to link the Huang He and Chang Jiang rivers and made it easier to ship rice from the south to the north.