In October 2024,the first summit of BRIGS will be held in Kazan,Russia.This is an event of global significance in the development of the BRICS cooperation mechanism.With Saudi Arabia,Egypt,the UAE,Iran,and Ethiopia becoming full members of the BRIGS mechanism,the expansion of BRICS.The experience accumulated during the development of the BRIGS mechanism and the existing problems that need to be summarized not only in practice,but also explored theoretically.In particular,the historic expansion of the BRICS mechanism has not only made it more inclusive,but also added to its complexity,bringing to the fore the issue of"seeking common ground while reserving differences"within the BRIGS mechanism.To this end,under the theme of"BRIGS+and the Global South:Cooperation,Governance and Transformation",we invited some experts to contribute to an in-death discussion of this issue.