Blazed Ice Fruit
Feng Yun's groups entered late, many groups of cultivators had already entered the secret realm before them. Although It made their trip a little easier as they encountered fewer monsters, they lost many fruitful chances as well. One has to know that this secret realm has existed in the void for thousands of years, and many spiritual herbs and plants have been born in these thousands of years.
This world was ice was huge, at least thousands of people entered the secret realm, but Feng Yun's encountered only a few people. On the other hand, they met many spirit beasts. After killing many spirit beasts at the start, Feng Yun's group started to evade the spirit beasts to save their stamina and spirit qi.