車同軌，書同文

Etymology
Literally: same ruts for carriages, same script for writing
 * In the Qin Dynasty, Emperor Qin Shihuang standardized the width of roads, and the writing system. Today, this phrase refers generically to implementing universal standards.

Idiom

 * 1) universal standards
 * 2) * 2003: anon., www.oikos.com.tw