Finally Kuo Mei-fang came to a deep realization: "I'm sure the water-driven clock tower really did exist and was not merely a fabrication on Su Song's part, otherwise the dimensions he gives in his book could not have been so accurate.
做到最後，郭美芳深深感到，「水運儀象台一定是確有其物，絕不是蘇頌編出來的，否則書上的呎寸不可能說得那麼精準。