Zhang Heng and the Incredible Earthquake Detector

Zhang Heng, a brilliant inventor and advisor to the emperor, must create a device that can determine where an earthquake took place. Can he accomplish this impossible task in only two weeks?

• | Author: Randel McGee
• | Publisher: Familius
• | Publication Date: January 04, 2022
• | Number of Pages: 32 pages
• | Language: English
• | Binding: Hardcover
• | ISBN-10: 1641701684
• | ISBN-13: 9781641701686