Abstract:The original meaning of enlightenment is to explore obscuration, to eliminate absurdity, and to discovery truth. In the field of Chinese ancient humanity thoughts, we have ever experienced six enlightenments. In chronological order, they occurred in Zhou dynasty, Six dynasties, Ming and Qing, modern times, and two important events were May Fourth Movement, and Deng Xiaoping's ideological liberation. And the six corresponding enlightened subjects are divinity-based obscuratism in Xia and Shang times, the theories of kind nature and evil affection in Han times, only-rationalism in Sui, Tang, Song and Yuan times, and all absurd conventional ethical systems in Chinese ancient monarchy, the ancient slavery morality, and modern "extreme left" thinking trend. Tracking down the historical development in humanities thoughts in China, we can expose the general principle as follows: enlightenment occurs at the extreme point of obscuration; absurdity occurs beyong the limit of truth a little; humanistic truth is identical, so is absurdity; lessons can be found out from the repeated absurdities, and truth can be concluded from repeated enlightenments- which have proved to be the valuable resources for us to reconstruct value and ethics systems and to urge Chinese ethnic nation to develop rapidly in today's world. We sincerely appreciate Prof. Qi Zhixian's great contribution to us. Due to its length, we plan to publish the article in two issues.