This is just my theory but I think Guwon knows about the plan for them to take over the city and that's what he meant when he said not to worry about it (although there a potential for other interpretation too, again just my theory)
This is just my theory but I think Guwon knows about the plan for them to take over the city and that's what he meant when he said not to worry about it (although there a potential for other interpretation too, again just my theory)