THE SIGN:

Trigram Sun, the Gentleabove Sun the Gentle, Wind, Wood
Trigram Kên, Keeping Stillbelow Kên Keeping Still, Mountain

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.