achivements of han dynasty?

Han Dynasty is diveded into Western Han and Wastern Han.
Achivements of the Western Han: the opening of the Silk Road, the first complete calender book 'Taichu Calendar', Sima Qian'a Records of the Historian
Achivements of the Eastern Han: Cai Lun's reformation of papermaking, Zhang Heng's seismograph and armillary sphere and Hua Tuo's anaesthesia

1.Silk Road
2.Papermaking
3.Iron technology (cast iron) plowshares;Moldboard plow (kuan)
4.Glazed pottery
5.Wheelbarrow
6.Seismograph (Chang Heng)
7.Compass
8.Ship's rudder
9.Stirrups
10.Drawloom weaving
11.Embroidery for decorating garments
12.Hot Air Balloon
13.Chinese Examination System

These royal tombs provide a unique window onto the life of the Han royal courts. Unlike earlier dynasties, whose tombs consisted of large pits, most Han royal burials were cut horizontally into the living rock of the hillside. A shaft-like corridor led to a suite of rooms, presumably reflecting the layout of the deceased’s palace, which was to be his residence in the afterlife.

The tomb would be provided with all the luxuries of court life: furniture, kitchen utensils, tools and weapons, ritual equipment, jewelry, foodstuffs, toilets and other appurtenances of royalty, including their unfortunate concubines, cooks, and servants, who were sacrificed to serve their master in the hereafter. Jade was also put on the tomb.