After obtaining the book, head outside and move into the water to the left of the stone bridge ahead. Defeat the two underwater enemies and loot the nearby chest.
After grabbing this chest, head back onto the stone bridge and continue forward. There are three paths ahead; the main route is the middle one.
Let's explore the area on the right first. Inside, there are three items to collect: enhancement materials on the left, a material chest on the right, and Dust at the very back.
Head to the left side of the main road to trigger a short cutscene. Defeat the enemies descending from the trees, then go left to collect the Dust.
At the end of the path, another short cutscene will trigger. A character named the Blue-Clad Young Master will speak to us; we'll seek him out later.
Now turn back toward the main road. Defeat the enemies ahead and take the side path up to find the coachman on the second floor.
Once you climb up on the right, you'll find a save point. Save your progress and talk to the coachman on the left to receive the quest "The Way Home."

