Lu Chen, a new member of the Planning Bureau, wears a copper coin left by his father around his neck. On his first day on the job, he felt a breath of cold air under his work station - like a fishy cold climbing up from the depths of the ground. Since then, haunted houses, bones, crypts, dragon veins... Under a city, there is a lifeline that was cut off twenty years ago.
Zhao Dazhu is his brother who slept on the upper bunk in college and now works as a real estate agent in Jiangzhou; Qin Shaoqing is a "traveler" who carries a copper ruler on his back. He always appears at critical moments but never says a word.
Three people, three coins, and three locks.
Someone is cutting into the city's dragon veins, and Lu Chen's father - Lu Tianxing, who disappeared twenty years ago - seems to have left the only clue.
He wanted to know where his father had gone.
