《明史·志·卷一》
然后把京内和各地的晷影，新旧历书的记载进行综合比较，互相验证，撰写成确定的法则，希望能够与天体的运行相符合，日月的亏食不悖谬。 
然后将内外晷影新旧历书错综参验，撰成定法，庶几天行合而交食不谬。 
Then comprehensively compared the sundials in the capital and other places, compared the records of new and old calendars, and mutually verified them, and wrote them into definite laws, hoping to be in line with the celestial motion, and the solar and lunar eclipses would not contradict each other.