Fishing Until the River Is Empty
船子德诚：钓尽江波 — Thirty Years for One Fish
The Koan
船子德诚得法于药山，与道吾、云岩为同门。后隐于华亭，泛一小舟，接送往来者，人莫知其为得道之士。
后夹山善会来参。船子问曰：「大德住甚么寺？」夹山曰：「寺即不住，住即不似。」
船子曰：「不似似个甚么？」夹山曰：「不是目前法。」
船子曰：「甚处学得来？」夹山曰：「非耳目之所到。」
船子曰：「一句合头语，万劫系驴橛。」
夹山乃大悟。船子覆舟入水而逝。
Boatman Decheng received the Dharma from Yaoshan, alongside Daowu and Yunyan. Later, he withdrew to Huating, where he rowed a small ferry, carrying travelers back and forth. No one knew he was an enlightened master.
Later, Jiashan Shanhuai came to visit. Decheng asked: "Venerable, where do you reside?" Jiashan said: "I do not reside at a temple. To reside would not be right."
Decheng said: "Not right — then what is it like?" Jiashan said: "It is not a thing of the present moment."
Decheng said: "Where did you learn that?" Jiashan said: "It is not within the reach of ears and eyes."
Decheng said: "A single phrase that fits neatly — ten thousand kalpas tied to a hitching post."
Jiashan was greatly awakened. Decheng capsized his boat, sank into the river, and was seen no more.
Unpacking the Koan
Decheng was a fully awakened master who spent thirty years as a ferryman. Not teaching. Not leading a monastery. Just rowing a boat, waiting. Waiting for the one student who would be ready.
When Jiashan arrives, the exchange begins with deceptively smooth Chan talk. "I do not reside at a temple." "It is not a thing of the present moment." "It is not within the reach of ears and eyes." These are good answers — technically correct, philosophically sophisticated. Any Chan teacher would nod approvingly.
And Decheng destroys them: "A single phrase that fits neatly — ten thousand kalpas tied to a hitching post." In other words: your beautiful answers are a trap. They fit too well. They're too smooth. You've turned Chan into a set of polished formulas, and those formulas are tying you to the hitching post of conceptual understanding for ten thousand lifetimes.
Jiashan breaks through. And Decheng, his life's work complete, capsizes his boat and vanishes into the river. Not suicide — completion. The transmission is done. The ferryman has crossed to the other shore. There is nothing left to do.
Why It Matters
This is Chan's most dramatic image of selfless transmission. Decheng spent thirty years in disguise, rowing a boat, waiting for one student. He had no fame, no monastery, no reputation. And when the moment came, he gave everything — and disappeared.
The teaching is about the nature of the teacher. A real teacher doesn't accumulate students or build a following. A real teacher is a bridge — and when the crossing is done, the bridge is no longer needed. Decheng's vanishing is not tragedy; it's completion. The teaching is finished. The form dissolves.
There's also a warning in Jiashan's smooth answers. Chan can become a performance — a set of clever formulas that sound enlightened but are actually just conceptual patterns. Decheng sees through this instantly. The "hitching post" (系驴橛) is any fixed position, any formula you're tied to — even a Chan formula.
For practice: what beautiful answers have you tied yourself to? What polished phrases are you hiding behind? And are you willing to let them go — even the Chan ones?
Practice Pointer
Think of the most "spiritual" thing you regularly say or think — a teaching, a mantra, a principle. Now ask: is this a living truth, or has it become a hitching post? Can you say it without the comfortable feeling of being someone who says it? If not, it's a rope. Let it go.