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Permanent Exhibition
 

   
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The Ancient Astronomy
 icon Excellence at the Center
 icon Dengfeng Astro Observatory
 icon Zhang HengĄ¯s Seismograph, Han Dynasty
 icon Abridged Armilla
 icon Upward-looking Bowl Sundial
 icon Sundial
 icon Kui Ji
 icon Internal Structure of the Seismograph
 icon Reconstruction to the Seismograph
 icon External Restoration to the Houfeng Seismograph, Milne