Definition
"Tien-pao," often spelled "Tianbao," is a term historically used in China as a reign era name. It's similar to naming a version of a video game or a software update. Emperors selected era names to signify their rule's aspirations or characteristics. It can be seen as a brand for a specific portion of an emperor's reign, impacting policies and cultural identity. The most famous Tien-pao era was during the Tang Dynasty, marking a period of initial prosperity followed by significant upheaval.