Theron looked over but didn't move or react to the words. His demeanor was as calm as could be as he calculated something.
In reality, this 'calculation' was about whether or not to kill these few people. The entire Sect was watching, and killing his own fellow disciples was fine enough. But an outsider killing the disciples of the Hall of Ice and Heart? That was far more troublesome.
Plus, they didn't even have any Ice Spirit Crystals worth taking either. Not everyone had a spatial ring strong enough to store the Ice Spirit Crystals in, so they needed to rent special sacks from the Sect.
Theron didn't need it, but he was using one nonetheless because there was no need to expose the unnamed cultivator's spatial ring so openly if he didn't have to. That was also why he was carrying his spear on his back instead of inside of it.
That said, he was inevitably going to run into an issue where his sack alone wasn't enough to carry everything.