The Chinese "tianrenheyi" thesis bespeaks a correlative cosmology irreducible to the Western metaphysics. This article historicizes "tianrenheyi" for new implications to help rethink the given concepts of 'person/thing,' 'environment/nature,' and 'relationality' in contemporary ethical and environmental education in three steps. First, it turns to Yu Ying-Shih's writing for a historical and ethical picture of "tianrenheyi" as an 'Axial breakthrough' in Confucius' time and with direct relevance to Confucian person-making education. Second, it moves on to Roger Ames' unpacking of "tianrenheyi" as hospitalized in a 'correlative cosmology' and 'Confucian relational personhood' to help us re-understand Confucian 'person' as being relational. Finally, it shows how these re-invoked philosophical-ethical-cosmological theses expose a 'foundational individualism' which grounds and confines current educational thinking to an anthropocentric (dis)ordering. As an alternative, this article calls for a productive symbiotic conjoining between humans and their cultural-natural environs toward nurturing today's youth into ecologically literate, responsible, and responsive co-beings.