32 Words

Lacking Form, Empty Image
Whole Body Transparent Void
Accept Surroundings, Self Incinerates
West Mountain Suspended Chime
Tiger Roars, Ape Cries
Spring Clears, Creek Calms
Turbulent Estuary, Crashing Sea
Cleansed Core, Upright Life

Estimated to have been written circa 961 AD at the end of the Tang or beginning of the Sung Dynasty.
The Tung/Dong family Red Book [translation by Alex Dong, 2003] attributes the poem of "These Words of Experience" to Taoist Monk Lǐ which was given to Yu Nian Zhou.
Lu Shengli [translated by Zhang Yun, 2006] references Lǐ as a Taoist priest from the Nanyan Temple on Wudang Mountain during the Tang Dynasty who practiced Xiantian [Pre-birth] Quan.
32 words reference a high-level relationships among the Dào, Qì Gong, and martial arts.
A core way to understand the poem is that it references Qì ( 氣 ) and the Body.

In this poetic form each of the four-character ‘stanzas’ relates to the next one.
Each stanza acts as kind of ‘stair step’ to the next, moving from 'external' to 'internal'.
There is a sort of ‘Waxing, Waning, Waxing, Release’ of the Qì in the second half of the poem

無	wú	Empty, not to have, no, none, not, to lack. Used similar to un- and -less Original Pictogram ( 象形 ) man dancing with something long in both hands
形	xíng	Form, shape, image, outside
像	xiàng	Image Thought to be the same word as 象 "elephant" Possibly derives from (lad-mo, “imitation, to imitate, mimic”)

全	quán	Whole Shows a whole piece of jade; pure jade.
身	shēn	Body Originally from a pictograph of a pregnant woman.
透	tòu	to penetrate, pass through, thoroughly, completely, transparent to appear, show Two components derive from ‘walking’ and ‘naked’
空	kòng	Void

應	yīng	Accept Component is ‘heart’
物	wù	All of the outside world, excluding oneself Component is grain; seed; lineage
自	zì	Self Originally a pictogram ( 象形 ) of a nose; in China (and East Asia) one points at one’s nose to indicate oneself, hence an ideogram (指事 ) of “self”.
然	ran	Burn away A fusion of 肰 njen, (“dog meat”) +火 (“fire”) – to burn. When paired with the prior character they indicate ease, 'naturalness', or a kind of unselfconciousness.

西	xī	West Traditionally explained as a pictogram of a bird settling into its nest, which by analogy with the setting of the sun means “west”.
山	shān	Mountain
懸	xuán	Suspended To hang or suspend, to worry, unresolved, without foundation
罄	qìng	Chime Chime stones, ancient stone or jade pieces hung in a row and struck as a xylophone. Likely in this case singular ones hung in Daoist temples

虎	hǔ	Tiger
吼	hǒu	Roars
猿	yuán	Ape
鳴	míng	Cries
z
泉	quán	Spring
清	qīng	Clear
河	hé	Creek
静	jìng	Calm
z
翻	fān	Turbulent (“wings”) – to flutter
江	jiāng	Estuary
倒	dáo	Crashing
海	hái	Sea This set of four characters is a common phrase that represents a kind of environmental chaos
z
盡	jìn	Cleansed (“hand holding a brush”) + 灬 (“bristles”) + 皿 (“dish”) – cleaning a dish with a brush – empty.
性	xìng	Core 心 (“heart”) + phonetic 生 – nature, personal quality, hence of the heart.
立	lì	Upright a person standing on the ground;
命	mìng	Life “to order; to command” > “order; command” > “destiny; fate; lot” > “life”