Myriad Serpent Valley.

Every year, from April to May, countless snakes converge from all directions to gather in Myriad Serpent Valley, much like migrating birds that appear at fixed times in fixed places.

No one can explain this phenomenon.

It could be that generations of snakes have formed a natural instinct through survival and reproduction, etching it into their genes. Or perhaps there's a special scent in Myriad Serpent Valley that attracts the snake swarms.