[Songakshi] Crossbeam and the Cornerstone

Description

Nam-mook talked about his older brother out of the blue and gave you a riddle to solve. It seems like he won't talk easily until you solve his riddle... Let's find the place in the riddle and then speak to Nam-mook.

※ Solve Nam-mook's riddle in order to find the location in Dalbeol Village and proceed with the quest.
※ Go to the location in the riddle and find a rock with a picture drawn on the inside.