What is Dhyana? Liber 4

Hey Crew, Today we continue our exploration of Liber 4 by Aleister Crowley with a chapter on Dhyana. The topic of conversation is unclear.

https://dn721601.ca.archive.org/0/items/a.-.-a.-.-the-mysticaland-magical-systemofthe-aa/Thelema/BookFour.pdf

If you're interested in learning more, here's the link to my book.
E-Book
https://books2read.com/u/bzxVaq
Print
https://www.barnesandnoble.com/w/a-series-of-unconventional-beliefs-pitt/1147205732?ean=9798227044730