The strength of the Battle Card Master comes from three aspects, the quantity and quality of spiritual power, the strength of the soul card, and the increase brought by the card.

Lin Yan has a unique card elf like Harley, needless to say the level of the soul card, the mental amplification effect of his own cultivation is beyond the Xuan level, and the quality of the spiritual power brought by him is needless to say, although it may still not be as good as the quality of the spiritual power of the silver level, but it will not be too exaggerated to think of it.

Then the biggest difference between yourself and the silver level is the amount of spiritual power, if you can't solve the silver level opponent at the fastest speed, then you will definitely fail because you run out of mental power first.

But if you have a card comparable to a four-star booster card, then everything will be different, although the highest card that can be used at the silver level can also reach four stars, but as far as Lin Yan knows, the students in Tianyu Academy have not yet been able to use four-star cards.

Four-star cards are very precious, and in the Tianyu Empire, only cardmasters above the gold level have the ability to get four-star cards.

Therefore, if Lin Yan can get an increase of more than four stars, it will undoubtedly bring a super effect, with that kind of increase, Lin Yan is confident that he can definitely fight with the silver level in a short time!

Lin Yan really wanted to try it now to see how much increase it could bring after using the card fusion technique, but this kind of thing was not something that could be tried casually, after all, the consequences were serious, and Lin Yan didn't have time now.

Taking the flame amplification and looking at it again, the corners of Lin Yan's mouth couldn't help but curl up, but the two-star card had a three-star amplification, how could it be made by himself, it was really too genius.

Putting the flame amplification back into the card code, Lin Yan took out the wooden box from the space ring again, when he was evolving the card before, the wooden box shook strangely, what was hidden in it, it also aroused Lin Yan's curiosity.

After his cheap master taught him how to refine cards, and gave him a lot of materials, he didn't know where he went, and he left himself a strange box, which was really weird.

The wooden box is very ordinary, so ordinary that there is not even a pattern on the box, Lin Yan took the box and looked around, not even a chain, no box chain, so wouldn't anyone be able to open it?

Then what do you say wait until no one is there to open it, and then let yourself open it, and I guess I will smash it on the ground, and the things inside will fall out directly, so why is it so mysterious?

Lin Yan sighed helplessly, and was about to lift the lid on the box, but when his hand covered it, Lin Yan was stunned to find that he couldn't open the box.

Although there is no lock, no matter how hard I try, I can't break this box.

Can't break it? And no locks? So how do you open this box and how do you look at the contents of it? Lin Yan didn't believe in evil, and tried it twice by brute force, but even if he used the strength to eat milk, his face was red, and he still couldn't open it.

Lin Yan was depressed, and he gave himself a box and didn't open it for himself, doesn't this mean that he took off his pants and turned out to be an iron door on the other side? And play with the eggs!

Why don't you ask Lin Lao? Lin Yan sighed and was about to put the box away, but at this time, Lin Yan found that on the side of the box, there seemed to be a few small words.

Could it be that the mystery is here? Lin Yan hurriedly took a closer look, and then pulled the corners of his mouth helplessly, his own master is really boring.

"The perimeter of the box has been sealed with the juice of the snake flower."

The words are very simple, the meaning is also very clear, the gaps around the box have been filled with highly attached snake flower juice, and if you don't melt these juices, you can't open the box.

Only then did Lin Yan understand that Liu Lao was testing his knowledge in a different way, the juice of the snake flower was of wood attribute and had a strong adhesion effect, and the only solution was to coat the juice with a layer of agave juice.

The sap of the agave has a very strong fire attribute, and when applied to the sap of the snake flower, the powerful fire attribute will decompose the sap of the snake flower and make it lose its adhesion effect, and only then can the box be opened.

Tequila, fortunately, Liu Lao had given it to himself before, Lin Yan took out the agave from the space ring, and then put it in a small bowl to crush it into slag, and slowly spread the collected juice on the gaps around the wooden box.

Sure enough, after coating the juice, black liquid flowed out from the cracks around the wooden box, and Lin Yan knew that this was the juice of the snake flower.

When the juice was almost gone, Lin Yan went to open the box again, and sure enough, he opened it easily, and after opening the box, Lin Yan found that there were two pieces of paper in the box.

"Lin Yan, when you read this letter, I should no longer be in the Tianyu Empire, presumably Lin Lao must have told you that I was traveling, but in fact, it was not, when I studied the space teleportation, I found that there is a mineral that should be able to complete the effect I expected, but that mineral often grows in very steep places, so I don't know what danger there will be when I go out this time, so I will leave you my most precious drawings first, this is the manufacturing blueprint of the four-star card, Your master hasn't been able to make a four-star card yet, but I'm sure you will. ”

The content on the paper was very simple, but after Lin Yan read it, he was shocked.

Master, don't have an accident, Lin Yan raised his head and looked out the window, although this is a cheap master, and he hasn't been with him for a long time, but Lin Yan already really likes his own person who has dedicated his life to the business of card makers, and Liu Lao's research on cards is quite fanatical.

And Liu Lao and Lin Yan's temperament is also very compatible, both of them are straightforward masters, and they get along most harmoniously, and more importantly, Liu Lao's cultivation has already reached gold, ranking in the forefront of Tianyu City, whether it is for Tianyu Academy or Tianyu City, it is the most important combat power, in case of any accidents, it will definitely be a big loss.

Phew...... The master will not have an accident, absolutely not!

Lin Yan hurriedly touched the wooden table and snorted three times, and then, Lin Yan made a decision, the master's greatest wish is to perfect his spatial teleportation card, so he must also study this well, so as to better help the master complete his wish.

When the master returns, he must at least reach the level of being able to make two-star cards, so that he can help the master.

Lin Yan looked at the sky outside the window with a solemn expression.