In August, the White Mountain Black Water is at its humid rainy season. The summer rainfall lasting three months has left the entire Heilongjiang River system at a dangerously high flood level. With spring ice jam floods, summer floods, and winter freeze-up, the river's navigation conditions have never been good. Apart from the poor navigation, traversing the dense forests of the Outer Northeast is also a hassle, with rain forming puddles and swamps everywhere where one might easily step into and get stuck.
Undoubtedly, the Outer Northeast Forest Sea at this time is a muddy landscape. Though it appears there are countless routes in the forest sea, in fact, only the sparse woodland around the rivers, and the swampy paths trodden by herds, are the best choices for various tribes to hunt, fish, and ride for long travels.
