mortise (slot cut into wood to receive a tenon) / 4th earthly branch: 5-7 a.m., 2nd solar month (6th March-4th April), year of the Rabbit / ancient Chinese compass point: 90° (east) / variant of 鉚|铆[mao3] / to exert one's strength
gold / chemical element Au / generic term for lustrous and ductile metals / money / golden / highly respected / one of the eight categories of ancient musical instruments 八音[ba1 yin1]