Tengri 's the supreme god of the old Turkic (Xiongnu, Hunnic, Bulgar) and Mongolic (Xianbei) religion named Tengriism. It's analogous with the early Chinese concept of Tianli in Western Zhou Dynasty (11th century BC to 8th century BC), and later Daoist coinage of 靝 (with 青 "blue" and 氣 "qi", for example, "blue heaven") and derived Confucian concept of Tianli. The four direction symbols of Blue Dragon (East), White Tiger (West), Red Phoenix (South), Black Snake-Turtle (North… (
More on Tengri)