The effect to practical world from 'Tao' is grand and huge. The track of its movement follows 'Tao' absolutely.
'Tao' itself is immesurable and inexpressible. 'Tao' arouses all phenomena of the world although it is so immesurable; 'Tao' gestates and creates the universe although it is so inexpressible; 'Tao' is far-reaching and dark, but the smallest micro hypostasis that creates the world is come from it. The smallest micro hypostasis is true and it could be proved authentic.
To trace back to ancient times from today, 'Tao' is existent all the time. We can explore the genesis of universe through the 'Tao'. How can I know the status of the genesis of all things? I study it through the principle of Tao's.