BRICS expands with 9 new partner countries. Now it's half of world population, 41% of global economy (youtube.com)
40% of GDP in the world. Half the population. 1/3 of oil produciton. Lots of minerals and cereals and meats. They have some big economies, although not any successful economies yet. A good market for China's products though, maybe. Sanctions like the US liked to use against Russia (settling payments) won't work as well if there are alternative global payment methods. A project started by the 2 biggest populous countries is starting to gain traction.
In the video he talks about how GDP is calculated, not always a good measure of economic prosperity (a large part is corporate beurocracy, not just production).

