Cultivation of Immortality: Starting from the Koi Carp That Protects the Way to Achieve Immortality

[Mortal flow + no time travel + no system + downward repair and upward cutting] Jiang Huiqi, a boy whose ancestors have lived in Qingtian Town for generations, has a koi carp enshrined in the town all year round. In a battle over the mountains and rivers, Qingtian Town was destroyed, and the young man was seriously injured and dying. By mistake, he signed a contract with Koi, and both his lives were restored. The young man needs to protect the road all the way, from the river to the sea, until death. As a result, the koi carp became the enforcer, and the boy became the protector. The fate of the two weak people became involved. Along the way, he slayed demons, absorbed water luck, and tasted all kinds of hardships in the world, but he also witnessed the purest emotions in the world. I thought that all the hardships would be rewarded, but I discovered that transforming into a dragon through rivers was a scam, and would eventually become the blood food of those who cultivate themselves. A great war has begun, and where will the fate of the young man go?