Cape Town, South Africa, in the Standard Chartered Bank’s safe area lobby.

“Yes, sir,” a black manager said to Miao kun, who was in disguise, in fluent English.”Our counter numbers are not numbered in Arabic, but are arranged in English alphabet order according to the account number provided by the customer.

“This is …” He pursed his thick lips and smiled, revealing his small white teeth.”This is the practice left behind from the Mandela period, which can not be changed later!” He said.

“Oh … Hehe …” Because of the mask, Miao kun had to be extremely careful even when he smiled, for fear of revealing any flaws.”I heard my brother mention this before!” He said.

“If that’s the case, then I’ll have to trouble you to take a look. There shouldn’t be any problems with my brother’s account right?” Miao kun picked up a pen and wrote down the letters “tal” on the paper.

“Please wait a moment.” The bank manager took out his tablet and checked it. He quickly nodded and said,”yes, we do have this account number!”

Yay!

Miao kun’s expression did not change, but he was overjoyed in his heart. He did not expect that his guess would come true.

“Then … Do you want to open it now, Sir?” The bank manager asked politely.

“Of course …” Miao kun nodded and said,”otherwise, I wouldn’t have come all the way from the United States just to chat with you, right?”

“Hehe, you’re really good at joking!” The manager was amused.

“My brother also told me that if I want to create an account here, I need to have two identical letters, right?”

“Yes, and there’s case distinction …” The bank manager smiled and said,”but … That was a rule from a long time ago. It’s not so troublesome for us to open safes now!”

Miao kun looked around and asked,”what do I need to do next?” Do I need to register?”

“Oh … No, no, no… You don’t need to register. We will protect our customer’s privacy 100%…” The manager quickly and politely pointed to the inside of the bank.”Please follow me!” Please come this way …”

“Thank you very much!” “Thank you!” Miao kun thanked him politely, but he could not help but look smug. In fact, before he arrived, he had already done a lot of research and understood the safe program here.

Unexpectedly, there was really a safe account called “Tytal” here. Obviously, this mysterious safe was the real clue left by Grimm!

The Standard Chartered Bank in South Africa’s safe area was far smaller than some of the big banks.

So when the bank manager led him into a small secret room, he even felt a little suffocated with his mask on.

As there weren’t many safes in the room, the manager quickly found a safe marked with the word “tal.”

At this moment, Miao kun finally understood why Grimm had hidden the fake diamond in the Tidal generator without using the word “tide” as the password.

This was because the Standard Chartered Bank had a regulation to open an account. An account must contain two identical letters, and it had to be differentiated by size.

That was why Grimm used the professional simplified vocabulary “tal” as the password. It was precisely because of this that Miao kun could smell the hidden clues behind green and had chased him all the way here.

“Sir,” the manager opened an old-fashioned keyboard under the safe and said to Miao kun,”please enter the password now!”

“Oh … Okay!” Miao kun approached the safe and examined the old-fashioned keyboard. It was similar to modern keyboards, with both letters and numbers on it.

Hu …

As the mask could not release sweat, Miao kun’s sweat flowed down his neck and around his collarbone, soaking his shirt in front of his chest. It was very uncomfortable.

However, Miao kun could not care about anything else at this time. He took a light breath and rubbed his hands unnaturally on the sides of his shirt. Then, he held his breath and pressed the string of letters and numbers “GDWP2056” on the keyboard.

This string of letters and numbers was the diamond password left by Grimm, and it was also the one written after “tal” on the generator box that hid the fake diamond.

Miao kun believed that since “Tytal” was the account number, the “GDWP2056” behind it must be the password.

At this moment, he typed the string of letters and numbers on the keyboard without moving.

After he finished typing, he held his breath and stared at the two red lights on the safe.

Whoosh …

As the safe rang, one of the red lights turned green.

Waa …

Miao kun raised his arm excitedly. Just as he was about to touch the safe, he noticed that there was still a red light on the safe that had not turned green.

“Oh …” Miao kun suddenly understood. He quickly took out a fingerprint from his pocket and said to the manager,”my brother has passed away, so I’m wearing his fingerprint. It should be in line with the rules, right?”

“Well … In principle, as long as you can open the safe, we won’t pursue your identity, but Sir …” The manager said awkwardly,”did you make a mistake?” As you can see, what you need to open is our bank’s first-generation locker. At that time, a key was used, and there was no need to enter a fingerprint!”

“…” Miao kun’s body trembled as if he had been struck by lightning. He had not expected that he would not be able to do his homework well. He had thought that he would be able to open the cabinet with Green’s fingerprint!

Feeling depressed, his hands reached into his pockets unnaturally. However, how could he have a key in his pocket?

“Sir …” The manager quickly asked,”do you remember your brother wrongly?” Did he give you the key?”

“Um … This … This …” In fact, Miao kun’s face was covered in sweat, but because he was wearing a mask, no one could tell. “Mm … Of course … Of course, give it to me …

“But …” Miao kun hesitated for a long time before he said,”the key … The key … Could it be in the United States?”

“Hehe …” He laughed unnaturally.”Brother, do you think that this is the most bitter joke in the world?”

“No, no, no…” The manager waved his hand and said,”don’t worry, it’s okay if you don’t have the key!” It’s fine if you know the security code. After entering the security code, the safe will open automatically even without the password and key!”

“What’s this? A security code?” Miao kun frowned.

“It’s a 13-digit password that’s completely made up of English letters. At the time, this was the pioneer of the Standard Chartered Bank!” The manager explained,”in order to ensure the security of the locker, we added a secret code function!

“At that time, a 13-digit password was synonymous with impossible to crack. The older generation of bankers called it foolproof …”

“Secret code … English letters … 13 digits … 13 …” Miao kun pondered seriously. The gears in his mind were spinning at high speed, and his brain seemed to be boiling.

“Sir … Sir?” The manager cautiously urged,”can you still remember that your brother mentioned the secret security code to you? If there’s no code, then … Um … Then …”

“Wait a minute! “I … I …” Miao kun’s eyes lit up, and he said excitedly,”I think I remember now. Can I ask if the 13-digit secret code will not be repeated?”

“Um … This … I can’t tell you!” The black man smiled, but his expression was a little stiff.

“Okay … I … I almost remember. Come on …”

After that, Miao kun began to type one letter after another on the keyboard. He had to think for a long time for every letter he typed. Although he wasted a lot of time, he still managed to type all 13 letters.

However, before Miao kun could prepare himself, the other red light on the safe turned green, and the safe automatically opened …