Xiangyan Up a Tree
香严上树 — The Dilemma of the Unspeakable
The Koan
香严智闲示众曰：
「如人上树，口衔树枝，手不攀枝，脚不踏枝。树下有人问：'如何是祖师西来意？'若开口答，即丧身失命；若不答，又违他所问。正当恁么时，作么生？？」
Master Xiangyan Zhixian posed this question to the assembly:
"Imagine a person hanging from a tree by their teeth, high above the ground. Their hands do not hold a branch, their feet do not touch a limb. Someone on the ground below asks: 'What is the meaning of Bodhidharma's coming from the West?'
If this person opens their mouth to answer, they will fall and die. If they do not answer, they have failed the questioner. At such a time, what should they do?"
Unpacking the Koan
This koan presents the perfect trap. The person is hanging by their teeth — no hands, no feet, no support. The ultimate question is asked. Every possible response leads to failure:
- Speak → you fall (you die in the attempt)
- Stay silent → you fail the questioner (you betray the teaching)
- Let go → you die (you give up)
- Hold on → you're stuck (you can't help anyone)
The trap is designed to be impossible. There is no logical answer. There is no clever strategy. The mind that searches for a solution is the obstacle — because every solution is a form of holding on.
In the Chan tradition, the answer — if you can call it that — is to let go of the question itself. Not to answer it, not to refuse it, but to step outside the framework entirely. The person on the tree, the questioner below, the question, the answer — all of it is one mind. When that's seen clearly, the dilemma dissolves.
Why It Matters
This koan is about the limits of language and the courage required to go beyond them.
Chan teaches that the deepest truth cannot be spoken. But it also teaches that refusing to speak is a cop-out. You're caught: language is both necessary and inadequate. The person on the tree is every practitioner who has ever tried to express the inexpressible.
The koan also mirrors the human condition itself. We are all hanging — suspended between birth and death, between knowing and not knowing, between silence and speech. What do we do when the most important question is asked and there's no safe answer?
Xiangyan's response to his own koan, when a monk later tried to answer: Xiangyan said, "I don't care about the person in the tree. What would you say?" The koan always comes back to you.
Practice Pointer
Sit with a question you can't answer — something real, something that matters. Don't try to solve it. Don't try to let it go. Just hang there, with the question, in the impossibility. What happens when you stop looking for a way out?