How did Zhou dynasty bronze inscriptions differ from Shang bronze inscriptions?

In the context of Chinese bronzes, the inscriptions on vessels evolved significantly between the Shang and Zhou dynasties:

• Scope and Purpose: Shang bronze vessels generally lacked extensive inscriptions. By late Shang times, they occasionally featured short, cast dedicatory inscriptions that identified the vessel type, the patron, and the ancestor to whom the vessel was dedicated, sometimes including a clan name within a yaxing (a notched square). In contrast, from the outset of the Zhou dynasty, vessels increasingly served as formal vehicles for recording events and reporting them to ancestral spirits.12
• Length and Content: While Shang inscriptions were brief, Zhou inscriptions grew substantially in length and detail. By the late Zhou period, a single inscription could contain well over 400 characters. These records often documented specific historical events, such as royal rewards or military successes, serving as important historical source material.23
• Function: The common addition of the phrase "May sons and grandsons forever treasure and use it" in early Zhou inscriptions provides evidence that these vessels were primarily intended for use in temple sacrifices, whereas some Shang vessels were clearly created for burial with the deceased.1