The design of Peace Pearls reflects a unique approach to the common problems of anxiety and disturbed sleep. It combines the conventional yin tonic approach to insomnia—in this case Zhang Zhongjing’s classical 2nd century remedy Suanzaoren Tang (Sour Jujube Decoction)—with the yang tonic Qianyang Dan (Submerge the Yang Pellet), a 19th century modification of the classical Fuzi Lizhong Tang (Rectify the Middle Decoction with Aconite) by the scholar-physician Zheng Qin’an, revered founder of the Fire Spirit School. Zheng Qin’an and his remaining disciples interpret disordered sleep and other signs of upward mobility as a leaking of the Kidney battery, which requires a drawing back of the life force into the lower dantian. This downward anchoring effect is accomplished by combining aconite and amomum.