Traveling back from Shanxi to Mount Heaven was a march that required at least two weeks' time on foot. Unfortunately, although Leo dearly missed going everywhere in a carriage with the help of the horse that accompanied him throughout his journey in the Sword Continent, he couldn't replicate the same situation in the current murim…
Not only did the monsters spread everywhere do their job in decreasing the population of other living things other than humans, but just the casual 'fear' that the monsters emitted was enough to intimidate a horse or any other animal into freezing in place.
Of course, those that had the capability to stand up to monsters like True Beasts would react differently, but taming a true beast was often a job that took months. While Leo did indeed have the chance to do something like this over the last few years, nothing was easy when one was always on the move.
"Keep up the pace, we should be there soon."