Honghuang: Building Infrastructure Before the War Between the Wu and Yao Clans

After transmigrating into the prehistoric human race as an orphan whose life is worth no more than an ant's, he puts his civil engineering knowledge to use, carving stone knives and shaping wood into tools. When Nüwa molds people from clay, he builds a city. Before the war between the Witches and Demons begins, he gets construction underway, waiting for the immortals to come beg him to draw up their blueprints.