In order to incorporate Buddhism with Confucianism as a part of his contemporary Chinese philosophy encompassing various Eastern philosophies, Xiong proposed a correction of Buddhist learning of daily decrease. Xiong understood the basis behind "daily decrease" to be Buddhism's metaphysical belief of the "unbridgeable split between an absolute unchanging reality (Dharma-nature or fa-xing), and a constantly changing and conditional phenomenal world (Dharma-characters or fa-xing) (Xiong, 1994, pp. 69–77, 84–5, 111–12). Jiyuan Yu, in his examination of Xiong, describes this as the "Separation theory". Meanwhile, Xiong's theory behind correcting the "daily decrease" rested heavily upon what Yu describes as the "Sameness Thesis". Xiong, in his New Doctrine, calls this Dharma-nature "ti" and Dharma-characters "yong". Xiong argues that unlike how Buddhism perceives these two worlds, these two worlds are a unity. Xiong's reasoning is shown in his 1985 version of New Doctrine: