天下观念 meaning in English

all under heaven

This concept propels the assassin to give up his plan and the emperor not to spare the life of the assassin
今次讲的是天下观念，刺客以大局为重放弃刺秦，秦王也以大局为重不留活口。
That may explain why this movie received mixed response when it was premiered in hong kong . but for the foreign audience who have no prior knowledge of chinese history , it might not be a big problem , as most of them would probably just see it as another fictitious wuxia story after all
外国观众对中国历史所知有限，不知道秦始皇是何等人物的大有人在，以这个故事说服他们相信天下观念不难，但对于中港两地的观众而言，要把秦始皇这个功大过亦大令人又爱又恨的历史人物当做救世主，实在肉麻不堪，不免令人难以接受。