Lucky knot: also known as auspicious program, infinite button, auspicious image, etc. Infinite button is regarded as a symbol of good luck in India, because it is a "△" character, which is organized into a disc with no pattern at the beginning and end, indicating that Buddhism is boundless, everything is bright and unimpeded. According to the interpretation of Tibetan Buddhism, it symbolizes Brahma Sutra and represents all theories and philosophies about the universe. It also symbolizes that if you follow the Buddha as the outline of Buddhism, you will be able to salvage pearls of wisdom and jewels of enlightenment from the ocean of life.