The philosophers of Pre-Chin kept eyes on King Jia's and King Zhou's atrocities when they studied the reasons for the demise of Xia, Shang, Zhou Dynasty. Mencius' Monarchomachia argued that it's acceptable that Tang and Wu overthrew the tyranny as Jia and Zhou, being Rulers, were not capable of taking care of people's needs and governing people benevolently. XunZi thought that killing Jia and Zhou didn't mean killing Kings because Jia and Zhou were losing people's faith. HanFe brought up the murder of a ruler by his minister to emphasize the hierarchy relationship between the ruler and his ministers. The different opinions about Monarchomachia by Confucianism and Legalism influenced the philosophers' discussions in the early Han Dynasty. Mencius' Monarchomachia was respected by Confucian. Even though Mencius' Monarchomachia was not the core thoughts among the philosophers in the following dynasties because of the increasing centralization of sovereignty, it was still the innovative thought in that period that Confucianism stated to stick to the principle of people foremost.