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"Moo~" Black Bull let out a call. Chen Xun's words made sense; the world of immortals had countless spells, and one could never finish learning them.

But there was a hint of joy in Black Bull's eyes. It had now entered the path of layering formations and had grasped a bit of inspiration.

The two figures grew more distant, disappearing outside the Spiritual Medicine Garden in the blink of an eye.