What inventions helped Chinese society during the han dynaasty?

During the Han Dynasty, several key inventions significantly advanced Chinese society. The invention of paper improved record-keeping and literature, facilitating the spread of knowledge. The development of the seismograph allowed for better understanding and response to earthquakes, enhancing public safety. Additionally, advancements in Metallurgy, such as the production of steel, revolutionized tools and construction, contributing to economic growth and military strength.