As early as the middle of the 19th century, the famous German mathematician Karl Friedrich Goss proposed that humans should use the triangular communication function to try to get in touch with aliens. He proposed setting the forest into a huge triangle to attract aliens to meet and cooperate with the Earth. Earth’s civilization with high IQ will not only carry out advanced farming, but also understand the Pythagorean Theorem, and hope to contact and cooperate with aliens. Therefore, triangles are considered as one of the most mysterious and spiritual functional laws in cosmology.