One branch of the library is to help the main librarian collect the lost pages, and then you can buy most of the skill gems in the game from the librarian.
Extended data:
The inheritance of Diablo in Exile Road is more manifested in the overall style of the game and the understanding of the classic slashing ARPG kernel. The gloomy and depressing scenes, horrible and evil monsters, deep and desperate plots and various construction collocations in Diablo II have all been inherited and even evolved in the road of exile.
Some unique settings in the gameplay of Exile Road make him stand out in many games similar to Diablo. Its skill system, talent system and barter currency system are full of eye-catching genius designs. (Wandering Star Review)
References:
Baidu encyclopedia-the road to exile