The green onion fragrance that Immortal Fairy Bie Xue smelled wasn't inferior in quality to the aroma of the onion spirit crystal that she got from little friend Song Shuhang back then. If anything, the aroma she smelled just now was even stronger.
The aroma of the onion spirit crystal she got back then was the same as a green onion spice that had gone through an initial refining process and was thus giving off a light green onion fragrance.
But the smell just now was the same as a first-class green onion spice that Immortal Fairy Bie Xue had refined personally. Just smelling this aroma was enough to make people hungry.
Is it possible that little friend Shuhang found another very old green onion before breaking through? It seems that the green onion was involved in the heavenly tribulation, causing its fragrance to become even richer, Immortal Fairy Bie Xue thought to herself.