Common sense

What is a cockroach?

Azolla is a large marine bivalve mollusk with a diameter of 2 meters and a weight of 250 kilograms, and its life span can reach thousands of years. It is shaped like a clam, with a large and thick shell, with raised radial ribs and intercostal grooves. Because it is shaped like the groove of a wheel, it is called Chefu, and because it is as hard as stone and its internal material is like jade, it is later called Chefu.

Azolla is mainly produced in tropical oceans, while in China it is mainly produced in the South China Sea and inhabits among coral reefs in shallow seas. There are also Azolla fossils in the Himalayas, which are gathered among rocks due to crustal movement and orogeny from the sea.

Handicraft and collectibles are mainly made of dead shells, which have been buried in the sea for thousands to tens of millions of years, more than hundreds of millions of years. The living shells have been jaded, but they are a kind of protected marine animals, so they are not allowed to be fished, and they are not suitable for processing because of their poor jadeization.

Kuai is one of the seven treasures of Buddhism.

Because it has the highest whiteness and exudes spirituality, it is a magic weapon to exorcise evil spirits and is revered as a Buddhist sacred object. Buddhist monks and Tibetan lamas all hold beads made of it.

Trionyx is one of the four organic gems.

Cuckoo, jade, pearl and amber are collectively referred to as four organic gems, which are not ordinary stones. It is a gem with the same head as white jade and jadeite, and its shell is recrystallized into protein chalcedony after thousands of years of geological pressure.

Polygonum cuspidatum has extremely high medicinal value.

It has the effects of calming the heart and calming the nerves, cooling blood, lowering blood pressure, calming the nerves and calming the nerves.

Trionyx sinensis is a new favorite in the jewelry market, which has a high collection value.

As Trionyx belongs to four organic gems, ranking first among the seven treasures of Buddhism, it has medicinal value and powerful magnetic field. Especially, shellfish jade, which is precious shellfish with a life span of thousands of years and has been precipitated for tens of millions of years, is as good as rare jade and is a gift for friends. It has collection value because it is a scarce resource, non-renewable, and the seabed stock is scarce, so it is difficult to explore, so there is huge room for appreciation and it has become a new product in the collection field.