Zhenghai Song

• Bian yuan di dai
• Chao qi chao luo liang qian nian
• Dong fang lan se wen hua
• Zhongguo gu dai hai yang xue shi
• Zhongguo gu dai zhong da zi ran zai hai he yi chang nian biao zong ji
• Zhongguo gu dai zi ran zai yi dong tai fen xi
• Zhongguo gu dai zi ran zai yi qun fa qi
• Zhongguo gu dai zi ran zai yi xiang guan xing nian biao zong hui
• 图说中国古代科技成就