As a Border Relic that occasionally emerged in Hell at depths beyond 20, the Jug of Tree Blood had effects that defied common reason.
Typically, Alchemists used it as a one-off crucible, more upscale and convenient than the second-hand ones Huai Shi had purchased—it was almost impeccably effective for grafting in the Domain of plant-based Potions.
It preserved the characteristics of both materials while endowing the Potion with a horrific vitality. Generally, whoever drank it would undergo plant transformation, but when used on plants, the effects were perfect.
In more lavish scenarios, it might even be used as a flowerpot in important conservation projects for prized species.
And were it to be used as a blood dialysis device, Huai Shi's vessel would be directly infused with this terrifying vitality, granting him plant-affinity traits.
And incidentally, turn him into a vegetable.