The Book of Changes says: Mountains bear their names, and the four seasons and six energies determine their rise and decline. The Six Jia cycles govern fortune and misfortune, while the Three Cycles and Nine Periods mark time and space.
I am a mountain walker, a mysterious profession few have ever heard of. As the saying goes, mountains have their shapes and waters their currents. Over more than a decade, I have traveled across the country, seeing countless famous mountains, great rivers, deep pools, and vast lakes... The mountain walkers have a long history. Legend says the profession began with the guide who helped Yu the Great control the floods. Mountain walkers once aided Yu in his work, and both the Classic of Mountains and Seas that has been passed down to this day and the lost Book of Changes of the Mountains came from them.
Well enough!!