Introduction to the specific historical location of the third book "Offer"

Collecting all volumes of "The Legend of the Land" in "Off" can unlock the achievements of history. However, many players are not sure where the history of the third "The Legend of the Land is. First of all, this is the achievements related to the branch Dawn Walker. Continue to move forward, pass underwater, and enter a room full of bookshelf. The third book of the history of the Land of the Sun, continue to move forward. After passing underwater, enter a room full of bookshelf, and look up and see [History of the Land of the Sun, III: Unclear semantics].