Confucianism became the main state policy during the Han dynasty
Yang Jian ended the period of disunion in 589 and created the Sui dynasty
in 618 the Tang dynasty arose and ruled for 300 years
the Song dynasty invented the first system of paper money in the 900
the song dynasty ruled China and under thier rule there was inprovements in archetecture argriculture art inovations and trade
Genghis khan first attacked China in 1211
Zheng He led seven grand voyages to Asia between 1405 and 1433
During the Song dynasty, they improved the system by which people went to work for the government