Also known as Zhulong (Illuminating Dragon) and Shokuin in Japanese, Zhu Yin is a Chinese light and weather dragon deity that lives on Mount Zhōng, one of Heaven's gates to the North, - it appears as a 300 mile long dragon, with an elderly human male face instead of a draconic one. The earliest legend of China attributes daybreak to Zhulong opening his eyes, and nightfall to Zhulong closing his eyes - its cold breath brought about the winter season, while its warm breath brought about summer. It lives at the foot of its mountain and did not have a need to eat, drink or rest. The rain and wind are at its beck and call, along with his illumination being so great, it even pierces the depths of the Underworld.