Chapter 642: Chapter 523: What is Caution?_1

This cavern was massive, as were the mining tunnels connected to it, where secrets might have been hidden.

He understood that he must remain extra vigilant while exploring this mine.

With this thought flashing through his mind, He Song willed a Lower-grade Spiritual Tool, the Meteorite Bead, into action, and a protective screen of light instantly enveloped him.

Beyond that, a seal quietly appeared in his hand.

This was the Lower-grade Spiritual Tool, the Purple Lightning Spirit Snake Seal.

Like the Meteorite Bead, the Purple Lightning Spirit Snake Seal was another Lower-grade Spiritual Tool cultivated by He Song himself.

Both tools had been picked out by He Song from the collection of Master Yin Yue, a master at the Later Stage of Golden Elixir and an artifact refining master capable of crafting Middle Grade Spiritual Devices.

Naturally, the might of these Lower-grade Spiritual Tools, treasured by Master Yin Yue, was formidable.