1. mercurous chloride (Hg2Cl2) which is similar to the modern methods of preparation of mercuride and equation of chemical reaction .
   氯化亚汞的制备方法及化学反应方程式。
2. Preparation of mercuride had various ways in ancient China.This paper will focus discussion on preparation of mercuric sulfide(HgS);
   中国古代汞化物的制备方法很多,本文重点讨论与现代汞化物制备方法相似的硫化汞;

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