The water transport from the south of the Yangtze River sent Pei Xingzhou, a descendant of the Pei family, back to the vast Grand Canal with half of his ancestral "bronze fish charm" in his arms. There are frequent rumors of "monsters causing trouble" along the river, boats are destroyed and people are killed, and the people are panicked. I don't believe in ghosts and gods while sailing, but upon closer inspection I was surprised to find that the so-called "water monsters" were actually the "canal guardian beasts" cultivated by hydraulic engineers in the Sui Dynasty according to the secret techniques of "Shui Jing Zhu" - iron-headed turtles to clear the silt, and otter soldiers to clear the sand. Holding the mysterious "Water Vein Compass" in hand, he inherited the ancient method of "River Defense General Discussion", used "chazhuang" to attract otters, and used the tide to control the otter group. However, behind all the strange phenomena, local powerful Cui Chengsi is ruthlessly extorting money in the name of "suppressing demons." The boat is peeling off the cocoon, in the turbulent clouds, using the wisdom of hydraulic engineering and the guardian beast as the blade, to break the conspiracy, protect the water transportation, and finally open a new chapter of the "Grand Canal Ecological Guardian Department". The canal was silent, only the iron-blue back armor swimming in the ripples of light could be seen, and the light of golden scales growing in the young man's eyes.
