Cai Daren, an 85-year-old man living in Wuhan, Hubei province, has made over 200 models of ancient carts since 1993. Cai makes the models using traditional methods, which he mines from recorded historical data. His models cover three categories of carts: human-hauled carts, animal-hauled carts and carts for military use. Cai expressed his hope of building a museum for ancient cart models in the future.