Cai Yong, courtesy name Bojie, was Chinese astronomer, calligrapher, historian, mathematician, musician, politician, and writer of the Eastern Han dynasty. He was well-versed in calligraphy, music, mathematics and astronomy. One of his daughters, Cai Yan / Cai Wenji, was also a famous poet and musician.
Wang Chong, courtesy name Zhongren, was a Chinese astronomer, meteorologist, naturalist, philosopher, and writer active during the Han Dynasty. He developed a rational, secular, naturalistic and mechanistic account of the world and of human beings and gave a materialistic explanation of the origin of the universe.