With the recent development of artificial intelligence and complexity science,the complexity challenge not only carries over to intelligent sys-tems,but also revolves around computational complexity problems.The rise of generative AI has completely subverted the previous cognition of the com-plexity problem,and many new questions have emerged,such as how to solve the"generative difficulty"problem,and some methodological principles to cope with the challenge,such as the principle of Occam's razor,which has deepened our thinking about the epistemological and methodological issues.