THE SIGN:above Sun the Gentle, Wind, Wood
This hexagram is made up of Sun (wood, penetration) above, i.e., without, and Kên (mountain, stillness) below, i.e., within. A tree on a mountain develops slowly according to the law of its being and consequently stands firmly rooted. This gives the idea of a development that proceeds gradually, step by step. The attributes of the trigrams also point to this: within is tranquillity, which guards against precipitate actions, and without is penetration, which makes development and progress possible.