I've been reading up on some ancient Chinese schools of thought (confucianism, mohism, legalism...), partly inspired by this reddit coment, and I get the impression that quite a few ideas that seem modern (past few centuries) to us appeared there too .... utilitarianism and consequentialism, the question of how much the state should regulate the economy (the Discourses on Salt and Iron), skepticism about the supernatural (as well as pragmatic arguments for the use of ritual for social harmony).

So how much of this is real, and how much of this is over-eager western writers projecting their ideas onto ancient texts? How many "modern" ideas would be recognizable to ancient Chinese intellectuals?