“Triune Ultimate Reality” in Asia (Misunderstood Asian Sprituality)

The “Trinity” has been the base of Christian doctrine, and the standard to distinguish between the orthodox on one side and heretics and pagans on the other in the Christian perspective. Under the headline of “Triune Ultimate Reality in Asia “Trinity” is the central dogma of Christian theology viz. that the one God exists in three Persons and One Substance.”, the East-Asian religions are assessed in light of the Trinity, to see how they (Confucianism, Lao-zhuang thought, and Mahayana Buddhism) are reflecting the Trinity. What is the “Trinity” in Christian perspective?