In the year of 2020, the project of the collective writing on the theme 'Philosophy of education in a new key' (Peters, 2020) was launched to explore possibilities of thinking philosophy of education through collective efforts and intelligence. Its leading tone 'Harmonic Cadence' (Peters, 2020) means that the new field for philosophy of education in the times of the post-truth world (Peters et al., 2018b) is open for more participation and partaking. 'The Philosophy of Education in a New Key: East Asia', the collectively written piece by East Asian scholars, aims to answer to the call of the 'Harmonic Cadence' by introducing East Asian sagacity. The following works are included: (1) Introduction: Collective Writing with "Goblet" Words Echoing the Harmonic Cadence (Ruyu Hung); (2) Xing (Aesthetic Awakening) as a New Key to the Understanding of Learning and Education (Zhengmei Peng); (3) Educational Significance of Japanese Calendar Arts (Morimichi Kato); (4) Self-Cultivation in Japanese Traditions (Tadashi Nishihira); (5) Knowledge of Pathos about Infants (Mika Okabe); (6) Educational Philosophy: The Source and Foundation of the Rising Asia and Beyond (Xu Di); (7) A New Way of Doing Philosophy of Education in East Asia: Cross-Cultural Interpretations of the Confucian Concepts of Education (Duck-Joo Kwak); (8) Mindfulness-Based Learning: A Proposal from East Asian Perspectives of Education (Keumjoong Hwang); (9) In Search of a Reorientation in Korean Philosophy of Education (Youngkun Tschong); (10) The Mutual Learning between the East and the West (Cheng-Hsi Chien); (11) Conclusion (Ruyu Hung); (12) East Asian Sagacity and Sensibility (Michael A. Peters); and (13) On the Consonance and Dissonance of the Philosophy of Education in a New Key in East Asia (Marek Tesar).