Is line 4 of Heaven 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.

Hexagram 1, line 4

九四Line 4 of Heaven

Nine in the fourth place · 乾 qián

leaping or waitingthe abysstrial

爻辭 The line text

或躍在淵，无咎。

In the fourth line, undivided, (we see its subject as the dragon looking) as if he were leaping up, but still in the deep. There will be no mistake.

Its symbolism

或躍在淵，進无咎也。

'He seems to be leaping up, but is still in the deep:'—if he advance, there will be no error.

In plain words

The dragon is back, poised over the deep: 'perhaps it leaps, or stays in the abyss.' The word 'perhaps' (或) is the whole line — the fourth place is the first step into the upper trigram, beside the ruler, and the dragon may rise or sink back without either being wrong. Yang in a yin place, not central, the line has freedom and no fixed footing. The small Image reads the leap kindly: to advance here is no blame (進無咎也). Cheng Yi stresses the testing: the superior person at this stage tries the moment and withdraws if it is not ripe, and the text gives no good or bad fortune because the outcome depends on that judgement.

If this line is changing

You may make your move or hold back, and either is defensible; test the ground once before committing, and be ready to drop back without embarrassment.

Where the line stands

A solid line, yang — written 九 (nine), the number of an old yang 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 belongs to the upper trigram 乾 Qian (the Creative) (heaven).
It has no correspondence (無應) with line 1: both lines are yang, so this line must find its support in its neighbours or in itself.

之卦 When this line moves

乾 Heaven 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 乾 Heaven

Read 乾 Heaven for a question about

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

Questions about this line

What does Nine in the fourth place of hexagram 1, Heaven, mean?: The dragon is back, poised over the deep: 'perhaps it leaps, or stays in the abyss.' The word 'perhaps' (或) is the whole line — the fourth place is the first step into the upper trigram, beside the ruler, and the dragon may rise or sink back without either being wrong. Yang in a yin place, not central, the line has freedom and no fixed footing. The small Image reads the leap kindly: to advance here is no blame (進無咎也). Cheng Yi stresses the testing: the superior person at this stage tries the moment and withdraws if it is not ripe, and the text gives no good or bad fortune because the outcome depends on that judgement.
What does hexagram 1 become when line 4 changes?: Heaven 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 4 of Heaven 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.

Cast a reading Hexagram 1 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).