Zhen (震) is one of the trigrams from the Bagua. The body part it symbolises is the lower limbs. It is linked to the familial relationship of the eldest or first son. In nature, its imagery represents thunder. The Zhen (震) trigram ☳ is described as a “face-up bowl” (仰盂). This trigram plays a significant role in understanding the dynamic and powerful forces of nature, as well as the energy associated with movement and initiation.