Lu Chuan's face turned ashen with shock as all his strength suddenly erupted, charging straight towards Yu Sisi.
He had no idea why Yu Sisi would suddenly make a move. Under such circumstances, he could only fight with all his might to protect himself.
However, just as his power was released, the scene before him abruptly changed. Yu Sisi, with her back towards him, continued walking forward, never once looking back.
An illusion!
Lu Chuan instantly realized what was happening. There was some force within the cave that could affect one's mind, creating the illusion of being attacked by a companion and, in response, causing one to turn and strike at an ally.
By the time he realized this, his power had already lashed out towards Yu Sisi and could not be retracted.
Yu Sisi, too, became aware of the danger. In a moment of crisis, she separated from Zhong Ling'er's body, using her own ghostly form to block Lu Chuan's attack.