The Third Senior Brother and Mao Nanbei stayed in the cave for a bit longer before leaving first.
Lu Xun had initially planned to thoroughly digest the generous rewards he'd just received, but after looking at the broken sword clinging to life, he decided to first teach the Sword Cultivating Technique to Lin Chan.
He was genuinely worried that the sword spirit within the broken sword might suddenly give up, causing this mysterious broken sword to completely break down.
It looked so weak, just like a dying flame in the wind, ready to go out at any moment.
Even though the main quest "Guide" seemed to not have an after-sale policy. As long as Little Chan got the treasure, he would receive rewards, regardless of whether the treasure would break down after that; it wouldn't affect his ability to receive rewards.
However, this was, after all, the magical weapon of his beloved disciple, so he couldn't be careless.
