sentences:  Wei became a trusted colleague of the famous Song polymath statesman and scientist Shen Kuo (1031-1095 AD), who served as the head official for the Bureau of Astronomy, and worked on various projects with Wei Pu.When Shen Kuo became the Supervisor of the Directorate of Astronomy in 1072 AD, Wei Pu became Shen's protege, and was eager to partake in Shen's ideal reforms to the Chinese calendar system.With the aid of many different scholars and a large assortment of gathered books written on astronomy, Shen and Wei embarked on this enormous project.