Requests to answer Zen-Riddles or New Koans were sent to me by e-mail through contact me or "Free Koan and Riddle service".
These questions were often well-known Zen Koans, sometimes a little changed.
Others were more general questions about Zen.
Looking just for how to answer Koans in Zen? Go here or here.
The introduction to my free e-book "Miscellaneous Koans" Part 1 gives you further information about solving these riddles.
This question is a question about enlightenment.
This story most probably refers to a historic person, Tan-Lin ("the armless Lin"), whose late 6th century text: "Treatise on the Two Entrances and the four Practices" is seen by some scholars as a basic text for the later Chinese Zen school.
That's one of the Zen-Koans used to irritate students. Zen teachers like to do that...
Your question lacks a main feature of Koans, the contradiction.
That's a nice Koan.
The Koan is only about grass.
There are some variations of this Koan. The traditional version is case no. 5 of the 13th century Wu-men Hui-Kai collection.
Zen doesn't care about logic but only about reality, real everyday life.
The Koan makes something simple difficult.
There may be a "secret of the universe" or not.
This is a slightly changed version of Koan no. 46 of Wu-men Hui-Kai collection ("Gateless Gate"):
This is Koan no. 46 of the 13th century collection of Wu-men Hui-Kai ("Gateless Gate")
This is Koan no. 23 of the 13th century collection of Wu-men Hui-Kai ("Gateless Gate")
This Koan is known as the basic koan of Zen which shows the first gimps of enlightenment.
It's a quite famous Koan for it refers to the situation of newbies in Zen.
The story is derived from a Taoist story about a butcher.