People assume China is an incredibly smart entity who won't make major errors like Western nations do, when everything we know tells us authoritarian regimes are more incompetent. I don't think it's so deep. They are an economic superpower with deep pockets and are not averse to taking huge risks. So far it's going their way. Another thing is that they can break half the world in a couple of months if they like. They even did it once already by accident.