[hnnmzh]

> the character for emperor isn't invented yet

Hmm it's right there。 The 4th “皇” and 5th “帝”。 And the combined form “皇帝” - a title invented by the First Emperor himself。

[hangonhn]

Good catch. But that just adds more to my point: modern Chinese can understand seal script to a large extend because seal script is the ancestor of the modern (non-simplified) Chinese. My guess is that neither you nor I are "Indiana Jones".