狐丘，亦称狐刚子，道教神仙之“黄白大师”。其生卒年与籍贯不详，但据今人陈国符先生考证，为晋代人，与葛洪同时期。狐刚子名丘，又作胡罡子、狐罡子，是东汉末年炼丹黄白术的杰出代表。他是魏伯阳的师傅，三国吴人葛玄似为其弟子。他的著述反映了当时我国炼丹术所达到的高度，他在化学发明方面具有卓越的地位。
然而，由于他的一些著作未能完整地保存下来，所以长期以来，他的名字被遗忘。幸运的是，《黄帝九鼎神丹经诀》和唐代黄白术专著《龙虎还丹诀》、《太古土兑经》中保留了他在黄白术方面的一些重要佚文。此外，《通志·艺文略》还记载了他撰写《金石还丹术》的一卷。
fox and the art of alchemy. He was a prominent figure in the field of yellow and white techniques during the Eastern Han period, and his teachings had a significant impact on the development of Chinese alchemy. Fox Chungzi's contributions to chemistry were far-reaching, including his work on gold and silver refining, as well as his research into the properties of metals such as copper and lead.
Fox Chungzi's most famous work is "The Five Gold Powder Diagram," which contains important information about gold refining techniques. He also developed a method for extracting mercury from cinnabar, which was a major breakthrough at the time. Additionally, he discovered that by heating sulfuric acid with mercury chloride, he could produce pure sulfuric acid.
Fox Chungzi's contributions to science went beyond just alchemy. He was also an expert in metallurgy and made significant discoveries about how to extract metals from ores. His work laid the foundation for later developments in metallurgy and helped pave the way for future scientific discoveries.
In conclusion, Fox Chungzi was a true pioneer in both alchemy and metallurgy who made groundbreaking discoveries that have stood the test of time. His legacy continues to inspire scientists today as they seek new ways to understand and harness nature's secrets