What is All under Heaven?
"All under Heaven" comes from the ancient Chinese name for The Empire. Translation is derived from two Chinese characters for Heaven (Tien) and Under (Shia or Xia). When China was fractured into smaller kingdoms and provinces, those who fought for power sought the top spot as ruler over "All under Heaven."
meaning that the ultimate goal in offense is to take over without destroying that which you seek to rule, that those truly skilled in strategy achieve victory without fighting.