During the Sri Yantra, there are actually 24 lotus petals organized in two concentric circles. The outer circle contains 16 petals, which signify the lotus of creation as well as the fulfillment of all hopes, needs and aspirations. Mantras, that are Sanskrit syllables inscribed on yantras, are important "thought sorts" https://dallaseaung.life3dblog.com/37914623/facts-about-bhairav-revealed