USA? Hoover Dam for the AllSpark.
A goodly chunk of the electrical power for the southwest, and coordinated with a couple minor attacks on the California Aqueduct no drinking water for the greater Los Angeles area.
But Three Gorges is closer, would affect even more people, and would strike a blow for the Uyghurs.
Besides, unlike the occupier of the White House, the Chinese PM isn’t an active supporter of the most radical islamist side in any conflict world wide.
Anything is possible, I guess. The more I think about it, the more it seems to me that this is much more professional than 9/11, so to speak. I’m not sure the US is their target, but if it is, they’re not going to want to inflict terror but to do serious damage.