Around the 4th century, the Ancient Romans began to use glass for doors and Windows, and by 1291, Italian glass making was well advanced.
So the Italian glassmakers were sent to an isolated island to make glass. They were not allowed to leave the island for the rest of their lives.
In 1688, a man named Nave invented the technique of making large pieces of glass, and glass has been a common object ever since.
Glass: This is brahman's speech, not the so-called glass nowadays.In addition, it is translated as Pojogah, Subozhgah, Sebozhgah, etc., which are equivalent to the water essence of this recipe.
Crystal, purple, white, red, blue four colors.