Ruan Xiuran thought about it and realized it was true: "Then what should we do?"

Han Xiao continued, "Look, these are made of ordinary paper. If we use hardcover paper, we can't use this. We can add some fragrance and do gilding to elevate the quality of the hardcover. Of course, the price should also be different from the ordinary edition."

The more Ruan Xiuran listened, the more it made sense to him. However, he didn't quite understand the gilding process. Did it require gold?

"What is gilding? Does it have to be made of gold? Wouldn't that be very expensive?"

Han Xiao paused when he heard this. It seemed that Jiang State did not yet have the technology for hot stamping.

However, the hot stamping technology was not fully mature until the 21st century, and it was still relatively imaginative for the ancient working people.

However, he knows a little about hot stamping technology, so he will give it a try to see if he can succeed.

"This requires experimentation. You need to print gold foil on the cover of the book. Hot stamping technology can be used not only on books but also on fabrics." Han Xiao explained the principle of hot stamping to Ruan Xiuran.

Although Ruan Xiuran didn't understand some parts, he asked Han Xiao to write down the techniques and he would find a craftsman to do it.

"In that case, let's make a regular edition first, and then a hardcover edition. Don't use hot stamping for now. You can separate the paper and cover from the regular edition, and then use hot stamping to make it a collector's edition."

Ruan Xiuran now admires Han Xiao more and more. He doesn't know what's going on in Han Xiao's mind and how he can have so many strange ideas.