Chinese developed the equatorial method, used in the Warring States era (4th century B.C.) work, Star Charts of the Scholar Shih. Accurate and convenient, the method is still used to today.
據傳戰國（西元前四世紀）石申製作的「石氏星表」，即以此法標示，這種方法精確而簡便，為現代天文學沿用。