On-site in Kazan: BRICS drives Global South modernization

This meeting is set to be historic. It's the first time #BRICS leaders meet in person after the group's expansion. What's BRICS all about? Why are so many countries interested? And why is BRICS rapidly becoming a symbol of hope for nations across the #GlobalSouth? Follow Xinhua correspondent Ma Zheng in #Russia's #Kazan to find out.