It seems that this is the problem. Baozi looked around, but there was nothing but the military song card and the mirror. The bun rubbed against the wall, brick by brick for clues, but no magic weapons or charms were found. I knocked on the mirror and the military song sign again, and the two things were firmly glued to the wall, one of the wooden, inlaid with metal embosses; A glass with a metal frame, in the thirties, looks very ordinary, without the slightest abnormality. Baozi had no choice but to take two steps back, push away the cabbage flower that was complaining about alabaster and mud, pull out the sword of victory and evil, and stab it with a sword, but the Zhuxian sword forged by Ou Yezi himself was defeated, the glass mirror was unscathed, and he swung his sword to cut the military song card, and the wood brand was also unscathed. Weird, what kind of spell does this thing cast? Can you even resist the Zhuxian Sword? A few more swords, and still unscathed! Could it be that the sword given by the snake fairy Liu Xiaoshan is a fake?

Feeling infinitely tired, Baozi squatted down, thinking about sitting on the ground and resting for a while. But there was something in his arms that prevented him from bending down, and when he reached out and touched it, it was the Japanese army's confidential document bag. Ouch, Baozi is very annoyed, why are you busy forgetting it, since she stole it from the confidential room and put it in her arms, she has been kicking it until now, how to save Miko if she loses it!

However, since you have brought it, let's take a look. So I opened the file bag and saw that it was all incomprehensible Japanese and some drawings, and by the faint light of the flashlight, Baozi suddenly found that one of the engineering drawings depicted this underground palace! Sinkholes, tunnels, which depict the structure of the underground palace in detail, accurate to the meter. It seems that this is just a corner of the vast dungeon, and more complex structures are yet to come. The problem is that the upper left corner of the drawing is artificially torn off. There is the end of the dungeon.

The picture shows that under the giant sinkhole, there is first an "L" shaped passage, 50 meters on the short side, connecting the sinkhole, turning left at the end of the short side, through a door, it is a long side of nearly a thousand meters, and the end of the long side is a complex room structure.

The short side? Aren't you at the end of the short side now! Why are there endless tunnels in front of you? Could it be that after walking for so long and only walking fifty meters, there is really deceit.

But where is the door? Baozi went through the documents several times, but found nothing. On an inconspicuous yellowed telegram newspaper with the title "Secret Order" written on it, there was a poem written "Looking at the majesty of the mountains and rivers from afar, the glory of the country and the soul of the martyrs, and sending justice to the death, the martyrs and our compatriots." "Attached as" to the beginning of the door. Monthly changes. August 10, Showa 20. Secret. "Shigeru Ishihara". Shigeru Ishihara, such a familiar name, where have you heard of it?

In terms of literal analysis, it should be a code word on duty on a certain year, month and day of a unit guarding called "Changing the Beginning", and "Monthly Shift" is almost the meaning of being updated once a month. When the troops are fighting, they must set up code words in the camp, open the door and let those who say the code words go, and those who do not have the code words are often shot on the spot. When Cao Cao fought with Zhuge Liang that year, there was a record of setting up the code word "chicken ribs", because Yang Xiu's level of psychological analysis was extremely high, he guessed the meaning of Cao Cao's "dilemma", and was killed by Cao Cao, who was annoyed and angry. But from ancient times to the present, code words are generally very short, no more than four words. Good guy, such a long code word requires soldiers to stand in front of the door and recite it for a long time, and once they recite it wrong, they will have to be shot, which is not suitable for modern warfare at all.

One yuan is renewed, and Vientiane is renewed. It is the meaning of removing the old and spreading the new, and it is most suitable for the first gatekeeper, and it seems that the first gate may be the door that cannot be found in front of it. Baozi pondered here, but the cabbage couldn't sit still, so she leaned over and picked up the newspaper, "I'll take a look, what is written?" and frowned after reading it, "It's not human words, why donkey lips are not right on the horse's mouth." ”

Baozi shook his head, "I'm too shallow to understand." ”

Cabbage Flower said, "I'm more knowledgeable, just look like the words on the sign." However, the sign is still a personal word..."

"Wait!" Baozi suddenly understood, stood up and looked at the sign, and then looked at the poems on the newspaper one by one, yes, all the words of this poem are on the military song sign.

"I see, this military song brand is a cipher disk. Press them one by one in the order of the words, and the door will open! If a text appears several times in the military song, you should press the first word, and the devil will use the words in the military song to make sentences every once in a while, make up the password, and enter the tunnel according to the password. Baozi's eyes lit up excitedly.

Cabbage Flower also understood, and jumped up happily and hugged the bun, "Boy, you can do it, let's start!" "As he spoke, he was going to press it. The bun dragged the cabbage flower, "I still have to wait, how do I know that this is the final password in my hand?" ”

The two of them looked at it cautiously again, and Cabbage Flower recalled, "Twenty years of Showa... My grandmother said that she was arrested in 1944 at the Japanese Water Supply and Epidemic Prevention Center, which was the 19th year of the Showa era, so the 20th year of the Showa was 1945. ”

Baozi said, "As far as I know, after the Meiji Restoration of the Japanese, the month was recorded in the Gregorian calendar, and there is no such thing as our lunar calendar, so the month and day are generally our current month and day, which is August 10, 1945." This is a few days before the surrender of Japan! ”

Shigeru Ishihara! Baozi suddenly remembered this person, Miko Mikawaya's husband, one of the two bones dug up in her own barn! Miko says that the Soviets shot him and his wife, and that Shigeru Ishihara was the maker of the code, and that he died holding the codebook, so it is inferred that the password is more or less the latest.

The two glanced at each other, and the cabbage flower said, "Don't grind, we can't get out anyway, so it's better to try." It's a big deal to shoot a few poisonous arrows or put some poisonous mist on the wall, and the old lady can stand it. ”

Baozi nodded, and said in his heart that you have a soft hedgehog armor body, of course you can stand it, but I don't have anything. Baozi got up, first pressed "Yao" and "Wang", two prominent metal fonts "Click" two sounds in response, and then entered in turn "Mountains and rivers, military might, heavy, state, glorious, down, fierce, soul...."With the embedding of all the words, you can hear the sound of the hydraulic pump rolling the door shaft behind the wall, and the military song card and the mirror in front of you are moving slowly to the left and right, no, the wall is divided into two pieces, the ground shows the steel slide rail, the half-meter-thick wall rumbles to both sides, and the front is a deeper corridor.

At the same time, the trapped dragon situation that plagued the two disappeared, and the endless corridor that had stretched into the distance gradually faded and gradually disappeared into the real cold wall. This level is cleared. Baozi and Cabbage Flower were stunned, the two of them had just walked against this cold cement wall for a long time! If you look closely at the wall, the wall is full of evenly arranged holes, and when you look inside, there are rusty iron arrows in the holes, and the tips of the arrows are smeared with black medicine, which is estimated to be highly poisonous. If you make a mistake just now, these 100 arrows will be fired instantly, and there is no way to dodge them.

Cabbage turned her head to look at the buns, and said in a daze, "Why didn't your cousin come out to pick you up?" ”