Editing Spring and Autumn period (section)

===Attempts at peace (579)===
[[Image:Pu with openwork interlaced dragons design.jpg|thumb|230px|right|''[[Chinese ritual bronzes#Sacrificial vessels|Dòu]]'' vessel with interlaced [[Chinese dragon|dragon]] design, Spring and Autumn period.]]

After a period of increasingly exhausting warfare, Qi, Qin, Jin and Chu met at a disarmament conference in 579 and agreed to declare a truce to limit their military strength.{{Sfn |Hsu|1999| p= 561}}  This peace did not last very long and it soon became apparent that the ''bà'' role had become outdated; the four major states had each acquired their own spheres of control and the notion of protecting Zhou territory had become less cogent as the control over (and the resulting cultural assimilation of) non-Zhou peoples, as well as Chu's control of some Zhou areas, further blurred an already vague distinction between Zhou and non-Zhou.{{Sfn |Hsu|1999|p=562}}

In addition, new aristocratic houses were founded with loyalties to powerful states, rather than directly to the Zhou kings, though this process slowed down by the end of the seventh century, possibly because territory available for expansion had been largely exhausted.{{Sfn |Hsu|1999 | p= 562}} The Zhou kings had also lost much of their prestige{{Sfn |Pines|2002| p= 4}} so that, when Duke Dao of Jin (r. 572–558) was recognized as ''bà'', it carried much less meaning than it had before.