节。亨。苦节不可贞。
Water over Lake. The lake has boundaries. Structure through chosen constraint.
The Lines
初九：不出户庭，无咎。
Line 1 — Not going out of the door. Stay inside the boundary. The limitation is correct.
九二：不出门庭，凶。
Line 2 — Not going out of the gate. Same boundary, timing changed. The gate should open.
六三：不节若，则嗟若，无咎。
Line 3 — One who knows no limitation will have cause to lament. The lament teaches what the limit was for.
六四：安节，亨。
Line 4 — Contented limitation. Success. The boundary feels right. Chosen structure.
九五：甘节，吉，往有尚。
Line 5 — Sweet limitation brings good fortune. The boundary creates freedom within itself.
上六：苦节，贞凶，悔亡。
Line 6 — Galling limitation. Pushed too far. Release it.
Nuclear Hexagram
Nuclear Hexagram: 27 颐 (Nourishment)
Boundaries create the conditions for proper feeding.
Practical Application
Line 4 is the sweet spot — limitation that feels like freedom.