Bagua. The template has eight (ba) areas (guas), connecting two neighbouring corners of the octagonal trigram towards the centre to form one gua. The centre contains the yin and yang symbol, or taijitu as per taoist philosophy. Each of the ‘guas’ shows three yao symbols, stretching in three rows from the centre to the outer side. Each single yao symbol (line symbol) is either yin representing the receptive (female) force of nature, or yang representing the creative (male) force of nature.