Senses
遗书/ 遺書 posthumous writing
A note or letter left by a deceased person, such as a suicide note or a deathbed testament.
遗书/ 遺書 collected posthumous works
The writings or books of a deceased author published by later generations.
遗书/ 遺書 lost books
(literary) Ancient books or literature that have been scattered or lost.
遗书/ 遺書 to leave a letter
To leave behind a letter or written message when departing or passing away.