Halfway through the novel, Xue would require this herb to cure the poison in his body after trying to save Hana. Due to his growing strength and presence, those from the heavenly realm would descend down to fight Xue, and Hana would be a terrible burden to Xue.
A healer would take pity on Xue, and travel to this particular sword mound to get the herb to cure the poison.
Rereading really has its benefits.
Cecil smiled to herself, she remembered the author stating that the healer travelled north from the gate, and once she reached the infamous sword mound, she would turn east and find a tree with a red ribbon around it.
The healer would look closer and find an arrow marked on it.
After which, the healer would follow the direction of the arrow, and there would be a downhill that had the herbs growing miraculously on it.
"This place is creepy..."
"A place where the shooting stars fall, I thought it'll be prettier."
"Hey, Cecil, what are you hoping for your weapon to be?"