Quickly Travel: I Travel Through History with Copper Coins the Size of My Fingernails

Zou Wu, a freshman in the history department who is smart and has an almost obsessive passion for history. When she went to her grandmother's house, she found that the key hanging on the door was a copper coin tied with a red string. She was very interested in history and began to study this ancient copper coin. Unexpectedly, she unlocked the copper spirit inside, and began a journey through history...