《宋史·本纪·卷三》
评论说：过去唐尧、虞舜因为禅让，商汤、周武因为征伐，都面南背北而有天下。
赞曰：昔者尧、舜以禅代，汤、武以征伐，皆南面而有天下。
Comment: In the past, Tang Yao, and Yu Shun ruled by abdication; Shang Tang and Zhou Wu conquered the world by force. They all faced south and turned their backs to the north, and thus the whole world was under their control.
<s>[INST] Kindly elucidate the central themes in this passage in English: 赞曰：昔者尧、舜以禅代，汤、武以征伐，皆南面而有天下。 [/INST] Comment: In the past, Tang Yao, and Yu Shun ruled by abdication; Shang Tang and Zhou Wu conquered the world by force. They all faced south and turned their backs to the north, and thus the whole world was under their control.</s>
Kindly elucidate the central themes in this passage in English: 赞曰：昔者尧、舜以禅代，汤、武以征伐，皆南面而有天下。
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Comment: In the past, Tang Yao, and Yu Shun ruled by abdication; Shang Tang and Zhou Wu conquered the world by force. They all faced south and turned their backs to the north, and thus the whole world was under their control.
assistant