It's not so easy to just leave; there's a whole mess of problems.
Right now, the important thing is how to deal with the prisoners of war. The simplest solution would be to just kill them, but out of respect for Carlos, Gao Guang couldn't do that, not to mention these captives might still be useful.
So, we still need to wait for the results from the negotiation with Eric Mining Company and make sure there's nothing to worry about before we can deal with these prisoners.
But anyways, Gao Guang was injured and needed rest. Once someone took over and another monitored the prisoners, he was able to sleep soundly. When he woke up, it wasn't the pain that roused him, but a phone call.
The call was from Smith, who sounded ebullient, "The negotiation is over, Eric Mining Company and Matala have reached an agreement. Starting now, to shield Eric Mining Company from the disturbances, the South African side will dispatch troops for protection."