Luopu Yuan'an
Jap. Rakuho Gen'an
born:  834
died:  898

place:  China
Chan master:  Jiashan (J. Kassan)
Chan disciples:  5 recorded as masters
stories:

Osho
Rinzai: Master of the Irrational, ch. 5
aka:  Lo P'u (old WG)
            oshobob  The Living Workshop                                         
                                                        Zen Masters
...On another occasion Rinzai asked Lo' pu, "Up to
now it has been the custom for some men to use
the stick and others to give a shout. Which comes
closer to the heart of the recipient?"

"Neither," responded Lo'pu.

"What does come close?" asked Rinzai.

Lo'pu shouted. The master hit him.


Rinzai has given a tremendous device, but it is for
very intelligent people to know the difference when
the shout is of approval or of disapproval. He also
used the stick. Now Lo'pu has shouted, so giving
him a shout will not be right. The master hit him. He
needs a more clear-cut approval that he is right...

                                                        --Osho
                     Rinzai: Master of the Irrational, ch. 5