Sri Yantra, or Tripura-Sundari Yantra-the Queen of all Yantra, embodying the fullness of creation. It repeats the forms laid down in the basis of the universe, and also reflects the structure of the human being, including chakras, acupuncture points and energy channels. The Lotus with 18 petals brings fulfillment of desires, with 8 petals-getting rid of difficulties. The whole Yantra develops from the point called "bindu", which is in the middle of the Yantra and is the seed of the world, which contains absolute knowledge and eternal bliss. Triangles create a sense of expansion, just as the universe grows out of Brahman. T-shaped projections on the sides of the square of protection (bhupura) symbolize the liberation of the soul from the shackles of matter and exits into transcendental space.