I Made Inventions in the Song Dynasty

Jiang Yi, a modern social worker, died suddenly after working overtime. His consciousness fell into chaos. When he opened his eyes, the world was spinning. With a muffled sound and severe pain all over his body, he fell heavily into the grass on the outskirts of Bianjing. He was dizzy, soaked to the skin, and wearing a torn T-shirt and jeans that was incompatible with the ancient fields around him. The biting cold and strange environment made him wake up instantly, realizing that he might have encountered the most bizarre incident - time travel.