It's evidently used to control this sword.
"Not bad, it's really not bad."
Ning Qi looked at these swords and then asked, "How many spirit stones for these?"
"Master, since you like them, I won't say much."
"There are three in total, you can give ten million spiritual marrow for them."
The attendant saw Ning Qi liked them, then extended his fingers to respond.
"So expensive."
Upon hearing this, Ning Qi couldn't help shaking his head: "Five million, I'll take them all."
"Master, you don't know how difficult it is to obtain them. We had to sacrifice many disciples to get them."
"I'll give them to you for eight million, otherwise you can look elsewhere."
The attendant shook his head again and gestured with his fingers.
"Fine, eight million it is!"
Seeing this, Ning Qi didn't haggle any further.
"Good, Master is straightforward!"
"I'll pack them for you right away."
The attendant agreed happily and went to fetch the storage bag for Ning Qi.
