Four female college students woke up to find that they had traveled through time.
There is no system, no task panel, no "Chosen One" script. All they have is: a cell phone that is out of battery but lights up occasionally, a makeup box that can be exchanged for supplies, a space of bread, and a mouth that can speak anything into people's hearts.
From the snow caves of the Paleolithic Age to the sacrificial pits of the Shang Dynasty; from the alchemy room of Xianyang Palace to the locust trees in Chang'an, Zhenguan; from the lamp shadows of bookstores in Lin'an during the Southern Song Dynasty to the piles of old papers during the Jiajing period - they have walked through the night for thousands of years, leaving behind a lamp wherever they go.
Someone asked them what they were planning.
They said: I don't want anything. It's just that you have come, you can't just stand and watch.
