C588 The Dumbfounded Black White Roc

"Master, it seems your approach isn't working either," the Black White Roc observed.

Su Yun remained silent, his gaze fixed on the energy Crystal Cores before him as he sank into deep contemplation.

"I'll give it another shot!"

After a brief moment of thought, he picked up two vials of Medicine Liquid Essence and a Crystal Core, attempting fusion once more using the Spirit Pill method