By the 12th century, they could reasonably accurately make predictions of eclipses, but the knowledge of this was lost during the Ming dynasty, so that the Jesuit Matteo Ricci gained much favour in 1601 by his predictions.
Pada abad ke-12, mereka bisa cukup akurat memprediksi gerhana, tetapi pengetahuan ini hilang selama dinasti Ming, sehingga Jesuit Matteo Ricci mendapatkan banyak keuntungan pada tahun 1601 dengan prediksinya.