Conversation so far:
who standardized the written script coinage and axle width in china
To unify the empire, Emperor Qin Shi Huang instituted reforms and models, such as standardizing the written script, coinage and axle width, which improved the road system.
how long did emperor qin shi huang rule
Qin Shi Huang ruled until his death in 210 BC during his fourth tour of Eastern China.
who was the emperor before qin shi huang
Qin Shi Huang; 18 February 259 BC – 10 September 210 BC) was the founder of the Qin dynasty and was the first emperor of a unified China.

Question: what did the emperor do during his reign
Self-contained rewrite: what did first emperor qin shi huang do during his reign