Black Tortoise, also known as Black Warrior, is a mythical figure consisting of a turtle entwined by a serpent and is associated with the element water and the northern direction. The tortoise represents longevity and the serpent dexterity; their combination symbolizes harmony, benevolence, sincerity, virtue, and altruism. It is the embodiment of the ancient Chinese philosopher Lao Tzu’s statement “like water, nourishing all but competing with none”; it is sincere, benevolent, and selfless. One of the highlights of this meticulously crafted piece is the strong sense of interaction between the tortoise and the snake as they ride the waves, with the tortoise looking back toward the snake. The overall effect is that of power tempered by harmony. Associated with the four quadrants of the vault of heaven is the Azure Dragon of the East, the Vermillion Bird of the South, the White Tiger of the West, and the Black Tortoise of the North; in the center is the Qilin (unicorn). Each region corresponds to one of the five elements: metal (west), wood (east), water (north), fire (south), and earth (center). Moving across the night sky, the stars connect all life to the five elements. When the universe and elements are aligned, harmony ensues.