Crime Hunt Files: Bloody Angel

Bai Ji'an stared at the screenshot of the email with the password number on his face, his expression solemn.

He Wei looked at him and asked, "Do you have any clues?"

"Well, indeed there is."

"Really!" Zhou Qi immediately became energetic when he heard that Bai Ji'an could solve the problem. His eyes widened, and he couldn't help leaning towards Bai Ji'an, and asked: "What, what?"

Bai Ji'an reassured him not to have such high expectations of himself, "I made the association based on your cracking, and it may not be the right direction."

"Then let's talk about it, if we can come up with other associations!"

Bai Ji'an said "hmm" and said: "If it is true as you said, the horizontal bar between the two sets of numbers is used to connect the year, then there is a dating method that can turn the year composed of four numbers into two .”

Li Wushang was surprised: "Is there such a way?"

"Actually, this method is not only used by us, but also by ordinary people, especially during the Chinese New Year."

He Wei pondered: "New Year... Zodiac sign?"

Bai Ji'an nodded, "That's half right."

Li Wushang thought for a moment and then asked: "Could it be the heavenly stems and earthly branches?"

Bai Ji'an smiled slightly and said, "Yes, it's the Heavenly Stems and Earthly Branches."

The expression of the heavenly stems and earthly branches is very simple. For example, this year is 2023, and the stems and branches are Guimao.

Many people know, but not many people understand the algorithm for why the stem and branch of 2023 are Guimao.

"Ah..." Zhou Qi lay down on the back of the soft sofa and wailed at the ceiling, "Knowledge blind spot."

If he wants to be a qualified detective, logically, he should understand all this knowledge to some extent.

But there are some things that just don't come into your mind even if they are in front of you.

No one can do anything about it.

"It doesn't matter, books can't teach you, I'll teach you." Bai Ji'an pushed the password paper to the middle of the coffee table and said, "Now I will give you the algorithm, you can calculate the two years on this password paper come out."

With that said, Bai Ji'an pulled another piece of black distress signal screenshot paper at hand, turned it to the back, took out the pen he carried with him, placed it on the white paper, and pushed it in front of Zhou Qi.

Upon seeing this, Li Wushang slapped Zhou Qi's thigh with great discernment and forced a restart.

Zhou Qi sat up angrily, picked up the heavy pen and looked at it.

Good guy, this is a customized version of Montblanc, with Bai Ji'an's initials engraved on it.

"Don't slip up." Bai Ji'an pointed to the cipher paper next to him, "First of all, the first two numbers, 7 and 5."

"But what do the black dots mean?" Zhou Qi asked as he took off the pen cap.

Hewei reminded, "With the heavenly stems and earthly branches, the black spot above is the sky, and the black spot below is the earth."

Zhou Qi was indeed a little afraid of He Wei, but he still couldn't help complaining: "Isn't that a bit too easy to understand?"

Li Wushang said: "The gangster's thoughts may not be that complicated."

Bai Ji'an responded: "Yes, since he sent this kind of email to Nakagawa Hiroki, it means that he hopes that someone can discover the traces of Nakagawa Hiroki, and hopes that someone can decipher the code as soon as possible and find Nakagawa Hiroki. .”

Everyone said this, and Zhou Qi definitely had no objection.

He stared at the password on the paper and muttered: "The black dot is above the 7 and below the 5. So 7 represents the heavenly stems and 5 represents the earthly branches."

"Well, the next step is very simple." Bai Ji'an said: "Among the heavenly stems and earthly branches, the calculation of the heavenly stems is the most direct. What number is it? The last number corresponding to the year is this number."

Zhou Qi raised his head suspiciously, "That's 7?"

Is this too simple?

Bai Ji'an smiled lightly: "Yes, so I don't understand why this thing has become your knowledge blind spot."

"There must be more than that!" Zhou Qi became anxious and pointed behind him, "Where are the Earthly Branches? It must be more difficult to calculate the Earthly Branches!"

"It is indeed more difficult than the heavenly stems. Based on the known year of 2023, the heavenly stems are 3, and the earthly branches are the remainder of 2023 divided by 12. However, we cannot use it in our current situation."

"That's right." Zhou Qi stared at the code paper attentively, "We only know that the last digit of this year is 7, which is the year xxx7, and the remainder after dividing this complete number by 12 is 5..."

Li Wushang said: "This range is too large."

Bai Ji'an said: "It's okay. In addition to mathematical calculations, there is a conversion table for the heavenly stems and earthly branches after AD. Among the heavenly stems, 7 corresponds to Ding, and among the earthly branches, 5 corresponds to Chou. From this, we can conclude that the year represented by 75 It’s the year of Ding Chou.”

He Wei flipped through his phone. When they were just making calculations, he found the conversion table Bai Ji'an mentioned on the Internet, "So, the year represented by the 5 and 1 at the back is the year of Yiyou."

Li Wushang said: "Since the horizontal bar in the middle represents the connection between the two years, it is impossible for the later year to be greater than the previous one, so the correct meaning should be Ding Chou Year - Yi You Year."

"The Heavenly Stems and Earthly Branches cycle every 60 years. The years involved are far away, but not too many, so we only need to find 4 Ding Chou and Yi You."

Zhou Qi asked: "Two, four each?"

"Ah."

"Wow, with a 60-year cycle, centuries have passed in a flash!"

Then He Wei and Li Wushang divided the work, one checked the Ding Chou Year, and the other checked the Yi You Year.

Just do a search and the answer will come straight out.

In less than a moment, the two of them wrote the results on the same piece of paper.

Years of Ding Chou: 1877, 1937, 1997, 2057...

Yiyou years: 1825, 1885, 1945, 2005...

The four people sat in a circle, staring at the white paper with the answers on the coffee table, and almost in unison shouted out the sad and happy numbers that all Chinese people could not forget.

"1937 and 1945!"

Zhou Qi said excitedly: "The client and the missing person are both Japanese! The code paper must refer to the July 1937th Incident in 1945 and Japan's surrender letter in [-]. Therefore, the person who kidnapped Hiroki Nakagawa is a man who remembers history. A young hero!?"

Li Wushang told Zhou Qi not to be too excited, as it was still a human life.

Zhou Qi didn't care about this. He looked at Bai Ji'an and asked, "Senior, are you still helping me find him?"

Bai Ji'an seemed not to hear it. He stared at the white paper filled with years, thoughtfully.

Seeing that Bai Ji'an had no intention of answering, He Wei interrupted: "Even if you reject this commission, if Nakagawa Hideshi chooses to call the police, the police will still come."

This is an irreversible fact.