What is the sound of one hand clapping?

The other most famous zen koan, has a distinct and correct answer that is not mu. In the same way that the answer to “what is the sound of two hands clapping?” is to perform an action, the answer to this koan is an action. While there is an endless amount of deconstruction that you can do once you have the answer, the correct answer itself is not deconstruction, but a simple answer.

I’m surprised at how rare knowledge of the answer of this koan is when it’s easy to find the answer by Googling “what is the sound of one hand clapping?”. I wonder why the answer to the mu koan seems to be so much more widespread than the answer to this koan, when the one hand clapping koan is even more popular in the West than the mu koan. Please don’t post answers that come from Google in this thread without spoiler warnings.