By the time of the Han Dynasty, about 200 BC, architects were building all kinds of different buildings including watchtowers, palaces, temples, and store-houses. Architects started to experiment with more complicated roofs, using gables and overhanging eaves. They also started to experiment with building in baked brick during the Han Dynasty – just about the same time as Roman architects were beginning to build in brick at the other end of Eurasia.
In the 200s BC, people in China learned about Buddhism, the new religion from India, and so they started to build Buddhist temples for the first time. These early Han Dynasty Buddhist temples look like Indian temples or stupas from the same time. They are wooden towers.