What are the YangLong and Yin dragon?

So-called YangLong and Yin dragon, according to the mountain turning direction, it can be divided into two kinds: YangLong - mountains by the mountain by the steering wheel turning clockwise;Yin - dragon mountain follow the steering wheel turning counterclockwise.

Another dragon, a very short moment YangLong method is according to the mountains on both sides in the direction of flow, water always flows downwards from the middle of the nature, water flows from both sides of the mountain, if the water is on the left side of the arteries and veins, with pulse to the theory of the dragon, is left water right turning, dragon vein is Yin dragon;If the water is flowing in to the right side of the pulse, to the right of water turning on the left, is turning the dragon, namely YangLong.