Blackouts & The Climate Declaration: Is It the CCP’s “Self-Harming” Plot Against the US?

Last week, on Nov. 10, the US and the CCP suddenly released a joint declaration on Enhancing Climate Action in the 2020s. This declaration surprised representatives at the COP26 climate summit, as Xi Jinping was absent from this summit. People thought China wouldn’t get involved. So what are the stories behind the joint declaration, could the large-scale blackouts in China happening since Sep have anything to do with this joint declaration, are there other secret deals between the US and the CCP that we don’t know yet?