Huanghu means vague and intangible.
It is the future meditation vessel based on the theory of Taoism, and it is one of the ways to achieve the final mental peace for the future humanity. Everything follows the rule of Tao but Tao only follows the rule of itself, and that is why the vessel forms the infinite loop and self absorbs and generates at the same time. Tao is the beginning and rule of everything, thus everything is merging together, in the same rule, same element, and same form. There will be no scale, no color, and no boundary. The inside mind tunnel helps the meditator to focus on their body temple, and makes the inner god visible.