The longest and largest river in this world is known as the Long River.
Just the known sections of the river already span tens of thousands of miles.
The source of the Long River originates in the far west, and there is another claim that its wellspring is at Jade Capital Mountain, one of the sacred places of the Taoist Sect.
However, neither of these claims has been proven.
What can be confirmed today is that this waterway, from its source, lies at least further west of the Wanyu Kingdom in the Western Region, and snakes its way through the Central Region, all the way to the Summer Country in the Southern Territory.
The Long River and its tributaries together create the Long River water system, covering a large portion of the Human Race's territory, nurturing countless creatures along its banks. Because of its mystery, antiquity, vastness, and grandeur, it is also known as "the Inland Sea," "Mother River," "Ancestral River," and "the Source Stream of the Inner Rivers."