Because the girder doesn't know anything about how the glass is made.

Coupled with the annual tribute of glass, there are only a few pieces.

Due to its extreme scarcity, glass is extremely precious and is one of the finest types of jewelry.

And under Lu Ming's personal gaze, Qin Feng not only "made" the glaze, but also made a thin layer of glazed pages.

And that's not even the most amazing!

Qin Feng actually wants to make such a precious glass into a window?!

It's outrageous, outrageous!

Lu Ming looked at the crystal clear glass page, couldn't help but swallow a few saliva, and said with a complicated look in his eyes: "It's not difficult to make this glass page into a window, although it is a bit too wasteful, but after all, the young master has mastered the manufacturing method of the glass, and he can make as many ...... as he wants in the future."

Before he finished speaking, Qin Feng directly waved his hand to interrupt, and said in a true scripture: "You remember, there is only this one glass window in the whole world, and you can't make a second one!"

Hearing this, Lu Ming couldn't help frowning, his eyes were full of doubts: "This set of boxes can be used repeatedly, as long as it is concocted in the same way, how can Gongzi say that it is the only one in the world?"

Without waiting for Qin Feng to explain, Lu Ming had already realized something, and he couldn't help but admire it in his heart: "What Gongzi means is that the only glass window in the world is more precious." ”

Qin Feng bent down and grabbed the charcoal basket, poured some into the cellar furnace, so as not to turn off the cellar furnace to cool down, and then said earnestly: "Only the things that are the first in the world can enter the eyes of the saints." If you know that this glass window is out of print, the saint will naturally cherish it. In other words, the saint will never forget the maker of this glass window in his life. www. YSHU ”

Lu Ming admired Qin Feng's ingenuity and skills, but he was a little at a loss for the inner scheming: "As the so-called companion is like a tiger, being remembered by a saint may not be a good thing, right?"

Among them, the deep interest relationship, Qin Feng is inconvenient to explain to Lu Ming.

In fact, even if it is explained, Lu Ming may not be able to understand.

Since Qin Feng was assassinated by Jin Laosi, he knew that he had become the target of everyone, after all, he had contributed to the Beidi War and moved too many people's cakes.

In addition to the three of Hubu, Gao Taiwei, and the Lin family, there are not a few people in the world who want to kill Qin Feng.

Accompanying the king is like accompanying the tiger, this is true.

But there is also an old saying, called fox fake tiger might.

As long as the saint can remember Qin Feng and always maintain a fresh sense of Qin Feng, he dare not say it from afar, at least in this Kyoto City, Qin Feng can be safe and worry-free.

Qin Feng asked Lu Ming to smash the box, then looked at the tin tin tin trough that summed up the valuable experience of failure, and said in a deep voice: "You make a pure iron tin tin tin trough according to the original state of this wooden tin tank." In addition, from now on, collect tin and it will definitely come in handy in the future. ”

The glass made of the box has a rough surface and is contaminated with a lot of impurities, at least in Qin Feng's eyes, it is far from being "crystal clear".

Only with molten tin, inject into the tin bath, and then pour the molten glass into it.

Using the density of the molten tin, the molten glass floats above the molten tin, and then relies on the surface tension of the glass night to level the glass in order to make a real glass.

It's a pity that minerals were still relatively scarce in this era, so that the variety of metals was lackluster.

Tin is produced in small quantities in the Gangnam area, but there is almost no tin in Kyoto, so collecting tin is a relatively long process.