Zu chongzi family researches on and contribution to mathematics of astronomy calendar 祖冲之家族的天文历算研究及其贡献
2.
This construction site is right on zu chongzhi road , a major artery through zhangjiang , which means it was accessible and easily photographed 因为工地位于祖冲之路，一条比较大的马路，所以很方便拍照。
