Peih

Peih, meaning 'a Wall' or 'Partition,' is the twenty-fifth Chinese sieu, corresponding to Algenib (gamma Pegasi), delta Pegasi, and Alpheratz (alpha Andromedae). Ruled by Mercury, this mansion represents the boundary, the dividing line that separates inside from outside, known from unknown.

The wall imagery speaks to definition, clarity of boundaries, and the protective function of clear demarcation.

Peih belongs to the Black Warrior palace, concluding the sequence with a wall that marks the boundary of the Warrior's territory. Mercury's rulership brings communicative, defining energy to the boundary-setting. Walls separate and protect, define and contain, making this sieu relevant to all matters of definition and delineation.

When the Moon passes through Peih, Mercury's defining energy focuses on establishing clear boundaries. This is a period for setting limits, defining roles, and ensuring that the partitions between different areas of life are firm and well-maintained.

The Black Warrior (Xuan Wu), also called the Dark Warrior, is the celestial guardian of the North and the season of Winter. Associated with the element Water, the Black Warrior is depicted as a tortoise entwined with a snake, representing the union of endurance and cunning, stillness and movement. The North is the direction of depth, mystery, and the storage of vital energy during the dormant season. The seven sieu of the Black Warrior trace the composite creature through the cold, deep regions of the sky, forming the most mysterious of the four celestial animals.