re: At COP china and India announce they will expand coal plants, why continue the conference?

This is a big problem I have with the global warming crowd. They focus their efforts on countries already complying with their demands, but ignore those which aren't. Of those which aren't, China emits more greenhouse gases than the US and EU combined. To reach China's emission levels you have to lump the US, the EU and India together (at least as of 2021 numbers).

Why aren't protestors stacked outside of Chinese embassies? Why aren't they calling for a ban of all Chinese-made (or even Chinese-related) products? Why aren't they gluing themselves to streets and runways in China?

Because they aren't serious enough about it to go that far. It's far easier to get that warm and fuzzy feeling of righteousness by bitching and moaning to those who will tolerate your antics than it is to be serious enough about your convictions to risk life and limb by protesting towards those who may retaliate.