It certainly refers to that phrase, but of the two elements of that phrase, "tre...

dragonwriter on Sept 9, 2014 | parent | context | favorite | on: China's Island Factory – New islands being made in...

It certainly refers to that phrase, but of the two elements of that phrase, "treasure" is used pretty literally ("blood" for "lives" is, I supposed, slightly figurative, since the issue isn't the blood itself.)