Is line 5 of Great Accumulation in its correct place?

It is not in its correct place (不當位): a yang line in an even position or a yin line in an odd one, which the tradition reads as a line under some strain — often the reason a text sounds a warning. It is central (中): the middle line of its trigram, the position the commentaries read as balanced and most favourable.

Hexagram 26, line 5

六五Line 5 of Great Accumulation

Six in the fifth place · 大畜 dà chù

gelded boarremove the rootgood fortune

爻辭 The line text

豶豕之牙，吉。

The fifth line, divided, shows the teeth of a castrated hog. There will be good fortune.

Its symbolism

六五之吉，有慶也。

'The good fortune indicated by the fifth line, divided,' shows that there is occasion for congratulation.

In plain words

'The tusks of a gelded boar: good fortune.' The ruler of the hexagram, yin in the central place of Gen, must restrain the strong second line below it — a full-grown force, not a calf. The image is of taming by removing the source of aggression rather than fighting the tusks: a boar that has been gelded still has its teeth but no longer uses them. Cheng Yi draws the lesson for a leader: do not struggle against a strong subordinate head-on; take away what drives the struggle, and the strength becomes usable. The small Image says there is 'cause for celebration' (有慶也) — a wider blessing than the joy of line four, because this restraint benefits everyone under the ruler.

If this line is changing

Do not confront force with force; find what feeds the opposition and quietly take it away, and the strength you feared becomes something you can work with.

Where the line stands

A broken line, yin — written 六 (six), the number of an old yin line that moves when cast.
It is not in its correct place (不當位): a yang line in an even position or a yin line in an odd one, which the tradition reads as a line under some strain — often the reason a text sounds a warning.
It is central (中): the middle line of its trigram, the position the commentaries read as balanced and most favourable.
It belongs to the upper trigram 艮 Gen (Keeping Still) (mountain).
It corresponds (應) with line 2: one yin and one yang, the two lines answer each other across the hexagram.

之卦 When this line moves

大畜 Great Accumulation becomes ䷈ 9 小畜 Small Accumulation

Wind over heaven: dense clouds but no rain yet. A small force restrains a great one for now; gather strength quietly, with success in small things.

What it becomes9 · 小畜 Small Accumulationxiǎo chù

The six lines of 大畜 Great Accumulation

Read 大畜 Great Accumulation for a question about

Love and relationships Work and career A yes-or-no decision

Questions about this line

What does Six in the fifth place of hexagram 26, Great Accumulation, mean?: 'The tusks of a gelded boar: good fortune.' The ruler of the hexagram, yin in the central place of Gen, must restrain the strong second line below it — a full-grown force, not a calf. The image is of taming by removing the source of aggression rather than fighting the tusks: a boar that has been gelded still has its teeth but no longer uses them. Cheng Yi draws the lesson for a leader: do not struggle against a strong subordinate head-on; take away what drives the struggle, and the strength becomes usable. The small Image says there is 'cause for celebration' (有慶也) — a wider blessing than the joy of line four, because this restraint benefits everyone under the ruler.
What does hexagram 26 become when line 5 changes?: Great Accumulation becomes hexagram 9, 小畜 Small Accumulation: Wind over heaven: dense clouds but no rain yet. A small force restrains a great one for now; gather strength quietly, with success in small things.
Is line 5 of Great Accumulation in its correct place?: It is not in its correct place (不當位): a yang line in an even position or a yin line in an odd one, which the tradition reads as a line under some strain — often the reason a text sounds a warning. It is central (中): the middle line of its trigram, the position the commentaries read as balanced and most favourable.

Cast a reading Hexagram 26 in full Changing lines explained

Chinese text: the received Zhouyi (Wuyingdian lineage). English: James Legge, The Yî King, Sacred Books of the East XVI, 1882 (public domain).