I am sure some players would like to play the role of historians. For example, Sir TNaismith in Cathay would be more than happy to write down these records. He is a live history book for us.
In ancient China, each emperor has his own era name, and the year counting are based on the first year of each era. For example, the first such era name was designed in 140 BC as "Jianyuan" by the then emperor of Han Dynasty. So 140 BC was the first year of Jianyuan. And we just count the following years from that year. Historians have to reconcile the year counting with AD system.
