A heavy rain and a landslide caused Chen Xi, a staff member of the Pengshui Literary and Art Federation, to fall from the archaeological site into the underground of the Warring States Period a thousand years ago.
When he woke up, he was lying on the pebble beach beside the salt spring of Yushan Mountain. In front of him were the primeval forest, bronze spears and soldiers speaking the ancient Chu language. Qin general Sima Cuozheng was competing with the Chu army for the salt springs in central Guizhou, and a mysterious expert named "Ying" disappeared on the Chu army's ship after rescuing him.
In order to survive, Chen Xi showed his only trump card - modern salt-making knowledge. He used soy milk to purify refined salt, used lime mortar to build city walls, and used gallnuts to stop bleeding and cinnabar to make medicine. He was regarded as the "Messenger of the Salt God" by the Ba people. Behind the battle for salt springs is the life-and-death struggle between the Ba people, the Qin people, and the Chu people. It is the lifeblood of the empire supported by salt and cinnabar, and it is also the lonely journey of travelers looking for their way back in the torrent of history.
The salt springs are endless and the people of Ba are endless. Two thousand two hundred years later, an archaeological team took out a scroll of bamboo slips from a crack in the rock wall - the salt-making process recorded on it was a full thousand years earlier than documented.
