Wei is the yin-earth branch (hidden Ji, Ding, Yi), the 6th month, 1–3 pm — dry soil storing wood.
Wei is the Wood vault — dry earth that still grows trees. Friction: the Chou–Xu–Wei punishment and Zi–Wei harm; warmth: Wu–Wei harmony and the Hai–Mao–Wei frame. Wei remembers your birthday — the sentimental one among friends.