Lead frost gives
lead frost, that is, lead acetate trihydrate. Its shape is clear, the quality is like frost and snow, the nature is flat and efficacious.

The ancient alchemist, in the pill furnace, is based on lead, supplemented by other things, through water and fire, and the harmony of yin and yang, to obtain this frost. Looking at its system, those who are not ingenious and agile, and those who are skilled in the heat cannot make it. At first, lead enters the furnace, melts like flowing gold, and is calcined and tempered to remove its impurities and store its essence. Then, in harmony with acetic acid, it slowly combines in a suitable time and space. In the meantime, observe the change of its color and texture, and observe the transformation of its texture. If there is a slight difference, all previous efforts will be lost.

The use of lead cream is quite extensive. In the medical way, it can treat sores and relieve swelling and pain. Apply it to the affected area, the cooling feeling will gradually emerge, the poison will dissipate, and the skin will heal. It can also be used to calm the nerves, make people calm and stay away from irritability. And between crafts, lead cream also has its own function. It can help the color of the paint to last for a long time, so that the painting and calligraphy will not fade over the years, increase the luster of the utensils, and make them shine.

However, although lead cream is wonderful, it must not be used with caution. It contains lead, and excessive amounts are harmful to the body. Those who use it should follow the ancient teachings and apply it according to the prescription, and should not act recklessly. Only in this way can we do our best to avoid its harm, so that the wonders of lead frost can benefit people and be passed on to future generations.