Rustling...
In the Thirty-Three Heavens, a shimmering silver light connected the rivers of the Heavenly Realm, endlessly flowing day and night.
Nourishing all the heavens, the Cycle Star Mansion, the palaces of the sun and the moon, and even an entire Killing Tree.
After the autumn began, the Killing Tree, whose growth cycle synced with the mortal world's seasons, shed its yellow leaves and petals in decay.
Upon touching the water, they rapidly decomposed, turning into dark sludge that settled at the bottom of the river.
This conceptual behemoth of a tree, extending countless Qi Roots into the mortal world, "activated" all knowledge, concepts, and myths beneath the Heavenly Gate.
Then it mercilessly preyed on sentient beings, digesting and absorbing them layer by layer to sustain its own growth, flowering, and fruiting.
Giving birth to terrifying Heavenly Officials, indescribable and dreadful.