Reddit reviews The Magical Lots of ZhuGe Liang -- Divination Using The I Ching

It looks to be a book of divination attributed to Zhu Geliang. In fact it was translated into English and you can even read the preface on Amazon!

Basically you're supposed to write 3 Chinese characters, count their stroke to get a number, then read the "poem" that matches this number. Your book is written in traditional Chinese characters and present the original text written in classical Chinese with its explanation, to be read from top to bottom, then right to left.

Here is the modern version of it, where you can write these 3 characters with your keyboard and let the website do the divination for you...