"...as long as you don't challenge it."

Challenge it on what? Currency manipulation? Unfair trade practices? Influencing elections? Going against every international body and established rule, and building island military bases to seize new ocean territory from its neighbors? Building concentration camps to imprison millions of minorities who have committed no crime? Propping up N. Korea to use its instability to further Chinese international negotiations?

So if China isn't challenged on any anything of importance, it doesn't care what you do? All countries do bad things and they should all be challenged on it. Why would China be different?