Sui, Song and Tang
http://www.britannica.com/EBchecked/topic/324254/K... (kublai khan photo)
sui- the sui dynasty was responsible for the construction of the grand canal which helped immensely with trade.
song- the song dynasty had many poets, china, and came up with the use of paper money.
tang- came up with a system that made it easier to mass print papers. created the wonderful invention of gunpowder. they first used gunpowerd on arrows intending to set the enemy of fire one it entered the body.