Zhang Tie didn't leave that mountain range until 10 days later.
During this period, Zhang Tie joined more than 10 battles and chopped off dozens of heads in the mountain range. After ambushing a team of fighters of Sacred Alliance Empire, Zhang Tie who disguised himself as Fred suddenly found that he could light all the other surging points except those on his spine. After that, Zhang Tie exited that mountain range and prepared to go back to the camp at the order of the Sword of Brilliance.
The battles in the 10 days could be ignored as they were far from risks. Given his realm as a sage-level knight, even being weak, he still didn't have any sense of fulfillment by disguising as a LV 9 fighter and fighting demon lackeys at LV 9 or below LV 9. It was far from being satisfying.