Hsia dynasty achievements?

Hsia (shēä) [key], semilegendary first dynasty of China, which ruled, according to traditional dates, from c.2205 B.C. to c.1766 B.C. or, according to some modern scholars, from c.1994 B.C. to...

There is little evidences been discovered till now to trace the Xia Dynasty. Less historic records make this period as a legendary dynasty till now.

Invented the wongtong noodle.

the woodblock printing, gunpowder, porcelain, clocks, medicine

Some achievements of the Qin dynasty, were making canals and roads connected to one spot around the palace. Which made travel easier for everyone, water or road, especially the armies they could...