I Ascended to Godhood Through Rescuing Small Creatures

The protagonist, originally a modern person, travels through time to the period of the Shang-Zhou transition and becomes a local god of the land. However, not officially enfeoffed by the Zhou court, he cannot enjoy the incense offerings of the Zhou Dynasty and has to associate with mountain spirits and wild monsters.
To change the status quo, he uses the secret technique of "seeking enfeoffment" to teach spirits and monsters to take human form, and guides various supernatural beings into civilization through the way of "humans teaching monsters to behave like humans":
Teaching Huang Xian (weasels) to carry bricks and build houses
Teaching Hu Xian (fox spirits) to tell stories and sing ballads
Teaching Changmang Xian (snake spirits) to go out to sea for fishing
Teaching other spirits and monsters agricultural techniques and craftsmanship
Under his leadership, the spirits and monsters no longer eat humans or do evil; instead, they live a pastoral life of men plowing and women weaving, gradually establishing the "Five Great Immortal Clans" and forming a unique spirit civilization. Adhering to the concept of "revitalizing the clan through science and education", the protagonist makes the spirits and monsters believe in science and change their fate with knowledge.