The Qin emperor created a uniform set of weights and measures for use in trade. These measurements ensured that items had the same weight and value throughout the Chinese market, helping to unite China. For example, an apple would have the same weight everywhere because they used one measuring and weighing system. This also helped in avoiding confusion.
The Qin emperor and government established a standard length for axels of all vehicles. One of the benefits of this law is that it made travel easier because all the wheel of carts will be the same length. Another benefit is that it helped connect the Chinese people through travel.
The Qin emperor also established a single written language with standard characters. This helped develop the modern Chinese language, and it also helped in the earlier days with things such as writing letters in which the receiver can read and understand.
Lastly, the Qin emperor promoted a uniform legal system across China. This ensured that the empire would stay united by having a single legal system and keeping order throughout the empire. The emperor also implemented harsh, severe penalties for breaking the law, making the empire stronger and more orderly.