In the Earth Immortal Realm.
Li Qian had already ventured deep into the Suspended Cave.
Due to the numerous earth rifts and the vast range, Li Qian still hadn't completely explored it.
On the map of the Suspended Cave that he drew, the densely-packed earth rift passages were like a massive and complex communication network.
"There's probably about one-tenth of the area left, and I should be able to completely perfect the entire outer region of the Suspended Cave's rift map."
Li Qian calculated in his heart.
However, he planned to return to the secret base and use the Transmission Array to go back to the Chenzhong Cave Heaven.
Suddenly, a strange song echoed from the depths of the Suspended Cave.
The song was faint yet melodious, as if it came from a little girl's voice, causing Li Qian to stop.
During the long exploration in the Suspended Cave's rifts, this was his first time hearing such a strange song.
As he went deeper, the song became more distinct.
