The big fight

Shingi exited their secret hideout the same way he entered.

As for the guards that he knocked out, he couldn't really do anything about them. 

Even if they reported that he got here, he doubted it would change much at this point. Also, both of them didn't have a good look at him since he was wearing his mask and had his special cloak to cover this clothing, and also he made them fall unconscious quickly.

He progressed carefully, not to enable any of the alarms, since the more time it would take them to discover that he was there, the better.

When he was out, he used all his speed to return to the barracks where he last saw Harbin.

It took him a couple of minutes to get there with his current speed since he was taking the shortest route this time.

There were some guards stationed outside but no signs of Harbin or Himon. 

He stored his mask and cloak before being at sight distance of the guards.