    Sentence t How adcurate ‘did-Gua maka the reformed.  ‘lurisolar ealeridar’? od .   ‘Sentence, 2: Amérig :Kublai Khan's "top, engineers. and  Scientists, was the astroriomer. Guo Shouing.. who was  tasked with sriany public: works projects and helped! the  «Yuan reform the lunisolar calendar tp provide an aéouracy|  ‘OF 365.2425 days of the year, which was only 26 segands|  “Off the modern Gregorian caleridar's measurement: :