Looking at the current situation, splitting up into two groups was indeed the best choice.
Meng Chao took the suicide passage, while Ice Storm took a long detour, one to two days behind him.
In this one to two days, Meng Chao would leave a special mark that only the two of them understood along the way from Scarlet Peak to the summit of the Holy Mountain.
If it was possible to enter the Holy Mountain temple, he would leave the same mark inside it.
The two of them had already acted separately many times before, and they had a considerable degree of tacit understanding.
Moreover, in the worst case scenario, Meng Chao could still take the risk of access the "spiritual link" to use the Ancient Dream Saintess's eyes and ears to observe the situation on Ice Storm's side.