What is standardization?
Standardization is making things the same. Qin Shi Huangdi standardized some things to make life easier for the Chinese people. It also helped unify the kingdom.
some standardized things
Qin Shi Huangdi standardized money so coins were the same shape and weight. His official coin was round with a square hole in the middle.
Qin Shi Huangdi standardized writing so people could communicate, even if they spoke different dialects. This is relied on for movies since there are many spoken languages, but only one written. The new writing had less curves.
Standardized weights and measures
Qin Shi Huangdi standardized weights and measures so measurements would be easier. For example, the chariot wheels could only be so wide so you would not have to switch roads on a trip.
Discovering China - The Qin Dynasty—China's First Dynasty