Zhang Y. PPI inflation rate from 1% to 6% – Mathematical Reasoning of Economic Intervening Principle Based on Yin Yang Wu Xing Theory in Traditional Chinese Economics (II). ASSRJ [Internet]. 2020Jul.6 [cited 2024Nov.25];4(24). Available from: https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/3147