For the Silent Mountain Range World, the study of outsiders, limited by time and energy, is bound to be limited.
But if anyone is most likely to master the local mysteries and legends, it would naturally be the local official forces...that dynasty, which has been passed down for thousands of years, has countless knowledge and secrets that outsiders cannot access.
These things will naturally become the spoils of war for some forces as the world moves towards its end, but from the perspective of Lu Ping'an, this is the high-level knowledge he is unlikely to come into contact with.
So when the other party proposed this exchange condition, he chose to accept it without hesitation.
Now, these books in his hand are classified as "low pollution taboo books" in the tax declaration list, but the secrets and contents contained within them are extremely useful.
