The environment-friendly aspects of traditional Korean houses range from the structure's inner layout to the building materials which were used. Another unique feature of traditional houses is their special design for cooling the interior in summer and heating the interior in winter.
South Korean Flag love the meaning behind it. I've also heard that the short and long lines along with representing the elements also represent the strong protecting the weak and the weak protecting the strong. Like the taegeuk, its all about BALANCE.