After Yu Yao entered the password, when the progress bar flashed, the salesman couldn't help but stare at the screen.

Time seems to pass very slowly.

Of course, time has not slowed down, but the mood has become more urgent.

"Ahh

"What are you shouting?" Yu Yao said, still staring at the screen.

The reason why the salesman shouted was because the password was correct this time!

Yu Yao couldn't help but let out a sigh of relief.

In the end, what Yu Yao got in his hands was also an old-fashioned suitcase. However, this suitcase is much smaller than Shangguan Yu's suitcase, with a length and width of no more than thirty centimeters, and a thickness of at most fifteen centimeters.

But it's quite heavy to start with.

After leaving the bank branch, Yu Yao and Lin Fengcao immediately returned to the hotel.

Close the door and turn on the lights, close the curtains, and open the suitcase.

Inside the suitcase, there was a sheepskin bag, which had been squeezed square. One end of the sheepskin pouch is sewn with wax thread.

In the end, what came out of the sheepskin pocket was a brass box, no wonder it was so heavy!

Yu Yao carefully placed the copper box on the table.

It looks like the copper box doesn't have a lid, in other words, there's no place to open it directly!

The copper box is a flat cube with edges on the upper and lower sides, and a rivet-like protrusion on each of the four surrounding sides. Whether it is a ridge or a bulge, it looks tight.

The most striking thing is that the upper plane is carved out of a nine-square grid.

Nine lattice centers, each with a round hole. Looking through the round hole, you can only see a smooth vertical hole, which is not deep, and at the bottom, it seems that there is a connected hole horizontally, and it is not horizontal.

On the edge of the nine-square grid, there is also a groove, which is stuck with a long copper sheet, and the long copper sheet is pinned to a small short copper piece at one end. In the groove, there are nine small balls.

This long and short copper piece is a simple card, and if you open the short copper piece and lift the long copper sheet, you can easily take out nine small balls.

"Nine Palace Trap Box!" Lin Fengcao frowned, "What is he going to play with?!"

Such a trap box cannot be forcibly sawed open or opened violently, because in addition to the surface of the mechanism, there are often hidden mechanisms inside, and if you are not careful, the things placed inside may be destroyed!

Generally speaking, only by placing these nine small balls in the correct round hole can this copper trap box open normally, so that the contents can be reached intact.

Yu Yao took a deep breath, "This is a box for the heirs of the big palm, and the stakes are very high. After the identity is confirmed, you can get the box, but why do you still want to study the ability of this heir! If the ability is insufficient, after you get the box, you can't get the contents inside!"

Lin Fengcao adjusted his mood, "This person is very thoughtful!"

"Yes!" Yu Yao responded, "It is his mission to leave the box for the heirs of the big palm, and he has to do it." However, if the big-eyed heir is incompetent and can't open the box, then it's not his fault. In addition, it also has the effect of preventing accidental outflow. ”

Lin Fengcao looked at the nine small balls, which were the same size, all about 1.5 centimeters in diameter.

The material is different.

It's the same size, and the material can't be the same, otherwise it won't be a mechanism.

Yu Yao identified that these nine small balls were gold balls, wooden balls, crystal balls, porcelain balls, jade balls, beeswax balls, coral balls, turquoise balls, and agate balls.

The gold ball is pure gold, and it is the densest of them.

The wood balls are red sandalwood, the color is already purple black, and the oil is very moist.

The crystal ball is citrine, pale yellow in color and transparent in texture.

The porcelain balls are a bit special, some with green glaze, some without, showing the fetus, and they look like they were partially polished from a piece of porcelain.

The jade ball is Hetian white jade, slightly bluish, with excellent density and oiliness.

The ivory ball is already covered with laugh lines, but it is not deep, it looks quite good, and the texture itself has turned yellow.

The beeswax ball is chanterelle yellow, the wax is firm, the pulp is thick, there is no half of impurities, it is uniform like milk candy, and you can see the fine weathering lines when you look closely.

The coral balls are Aka corals, ox blood red. It doesn't look very old, but the Akha coral plant, which can be said to be the smallest of all red corals, can produce a bead with a diameter of 1.5 cm, which is already very rare.

The turquoise ball is dark in color, transparent blue, and there is no iron wire throughout the body, and the degree of jade itself is very high, not like it is caused by playing.

The agate ball is a medicine agate, that is, there is a white stripe around the center of the bead, and the pulp is obvious, with a slight bump.

The materials, Yu Yao can identify them one by one, but, after identification, he still fell into the clouds.

If you follow the simplest arrangement of nine houses, it is similar to the puzzle fill-in-the-blank problem that elementary school students have done - put 1 to 9, nine numbers into nine spaces, so that any horizontal addition, vertical addition, and oblique addition will have the same result: 15.

This, in ancient times, there has long been a mantra: two or four for the shoulder, six or eight for the foot, three on the left and seven on the right, one on the nine, and five in the center.

But these small balls, only of different materials, are round and slippery spheres, except for natural traces, there is no deliberate artificial hint.

This is not the same as opening a lockbox, I am afraid that there is only one chance. If you put it wrongly, the ball should not be able to be taken out and used for a second time.

"Different balls must be put into different holes. Lin Fengcao groaned, "It's just that the nine-square grid carved out here is not even marked with directions." ”

"This is easy to say, where the card slot is, it must be the right-hand position. Because the stuck point of the long and short copper pieces is under the right-hand position. If it's left-handed, it's reversed. Yu Yao said, "In this way, you can determine the direction of up and down, left and right." ”

"But I was a little careless, and you really sank into it all at once. Lin Fengcao glanced at Yu Yao, "These nine balls, can they also correspond to nine numbers?"

"That's the most basic idea. And why is the old man very fond of number games. Yu Yao pinched his chin, "Let these nine balls correspond to nine numbers, how can you do it?"

Lin Fengcao thought for a while, "Could it be related to weight?"

Then he waved his hand, "It seems too simple! Because it's easy to line up; ”

Yu Yao looked at it for a while, and didn't have a clue for the time being, so he paced a few steps and lit a cigarette.

After taking a few puffs, Yu Yao spoke, "According to the weight, it is indeed unlikely. ”

Lin Fengcao stared at the nine-square grid again, "What I just said is the most basic and simplest idea, that is, the number arrangement of the nine palaces the day after tomorrow; However, if this idea is not what he envisions, then, in addition to the different positions of different balls, it is necessary to determine the order of delivery!"