Reasons

At this point, Darcel, Aniela, and Masami were questioning if this independent realm was just an endless snowy forest. 

When escaping from the Shadow Rouge Captain group, their talisman shot them several thousands of miles deep into this realm.

For all Heavenly Transformation cultivators, even for Early Ranks ones, their Heavenly Spirit Senses can expand up to several hundred miles in just mere seconds. 

And for later levels of the Heavenly Transformation realms, cultivators can even reach thousands of miles at the maximum boundary of their Heavenly Spirit Sense. 

It's why Darcel, Aniela, and Masami needed such an outrageous distance to get away from any squadron groups.

And this held true for their current situation. 

The talisman Bella had used far surpassed the one Darcel used. Darcel, Aniela, and Masami couldn't tell how far they traveled, but it was definitely up in the tens of thousands of miles.