Final answer:
The model of Hanavan is a watchtower made of earthenware with green lead glaze, found in a Han burial item. It depicts guards with cross-bows and is displayed at the Metropolitan Museum of Art.
Step-by-step explanation:
The model of Hanavan refers to the model of a watchtower found in a Han burial item, made of earthenware with green lead glaze. The model of Hanavan is about a yard high and depicts guards with cross-bows. It is an artifact displayed at the Metropolitan Museum of Art.