What was the new writing system in China(ancient china) (six letters)

While some claim that pottery shards at Ban Po contain proto-writing, the earliest definitive examples of Chinese writing are found on oracle bones of the Shang Dynasty (1,600-1,046 BCE). This ancient writing system, called Jiaguwen, was pictographic, meaning each symbol represented a physical object.

Explanation:

i would think it's industries and hydroelectric power

d. she conquered the black sea coast and parts of poland.