One day two monks visit Seppo at his
hermitage. Seppo goes out to greet them at
the gate and he says, “What is this?” The
monks reply, “what is this?” – Seppo returns
to his cottage in disappointment.
(Hekiganroku, case 51).
And looking at Yamada Mumon’s Enso we
read Seppo’s question, “what is this?” – Or is
it the visitors’ answer?