Naruto: I start with one door, and I can open it infinitely.

bang-

"Finally back..."

Lin Chuan looked at the familiar living room, the familiar furniture, and the familiar decorations, and couldn't help but let out a long sigh of relief.

Although not a single day had passed in reality, he had actually spent nine years in the ninja world. If you include the other restarts, he had spent a total of ten years in the ninja world, which was indeed a long time, one-seventh of a lifetime.

A fifty-kilogram gold brick is indeed quite heavy. He possesses a formidable physique in the ninja world, and lifting a fifty-kilogram gold brick is effortless for him.

In the real world, lifting 100 pounds with one hand is very difficult for anyone other than a professional. The average modern person with a weak constitution would not be able to do it and would instantly drop it and crash to the floor.

And the chakra knife he brought is actually a controlled weapon, strictly prohibited from being used in fights. This sharp chakra knife can only be used as decoration; it cannot be used to cut people.

After resting for a while, he looked at the chakra knife and fifty kilograms of gold on the ground, which were the two things he had brought back this time. The other money and items in his pocket had not followed him.

To bring something out of the Naruto world, you have to hold it with your hands, and it has to be something you can lift; otherwise, you can't even carry a huge rock.

Next, he carried the chakra sword to his collection room and brought over more gold in batches. He put away all the figurines on the shelves, leaving only a few items from the Naruto world on the shelves, namely...

A withered blade of grass, a handful of soil, a dead earthworm, a dead mosquito, a dead frog, an ordinary pebble, a dead snail, 50 kilograms of gold, and a chakra knife.

The withered grass, soil, pebbles, and other items were things he brought back from his previous travels to verify whether he could bring anything out of the Naruto world, which is why he decided to bring out the gold.

The remaining dead earthworms, mosquitoes, frogs, snails, and other animals and insects were all alive before he brought them back, but they died after he brought them back; the death occurred at the cellular level.

To determine whether the cells were still viable, he spent several hundred dollars to buy a microscope to observe them, and finally determined that it was cell-level death, or in short, complete death.

Therefore, we can conclude that the door from the Naruto world back to reality cannot be used by living beings, and the same applies to going from reality to the Naruto world.

Once he was certain that the door was impassable for living beings, he felt relieved. This meant that no one could follow him back to reality; entering the black hole would result in complete disorientation.

After scanning his spoils one by one, he sat down at his desk, opened his pocket, took out the notepad from before, and continued with the previous questions.

Known problem

Can this door transport me to other worlds? [No, for now]

Is each time he travels to the same timeline? [No. His 37th time traveling to Konoha was during the Third Shinobi World War in year 46, and his 102nd time was during the Second Shinobi World War in year 35. During that time, he replaced a child and lived in Konoha for several months, leaving behind more than ten marks before leaving. When he traveled to Konoha for the 133rd time, these marks were not found. This indicates that each time he travels to a completely new Naruto world, not the same timeline.]

Is that tenant farmer's child still around? [Yes, he is. To see him again, you'd have to travel back to the time of Tobirama Senju.]

What is the flow rate between the two worlds? [133 time travels, many of which resulted in survival in the Naruto world for more than a day. Each return took five minutes. Therefore, it can be determined that each time one travels to the Naruto world, five minutes pass in reality. It is currently evening in the afternoon of this day.]

If you travel from the Naruto world back to reality, can you enter any gate? [Yes]

Can this door be used to bring out items from the Naruto world? [Yes]

Can a shadow clone return to reality? [No, it will explode.]

Can chakra be brought into reality? [No, in reality you're still just an ordinary person.]

Can this door bring out living beings from the Naruto world? [No, living beings will turn into corpses.]

How can I bring anything out of the Naruto world through this door? [I can take anything I can lift with both hands.]

You can't bring anything into the Naruto world from reality. Can items brought out of the Naruto world be brought back into it? [Yes, you can try bringing back items like withered grass, leaves, soil, and mosquitoes.]

Unknown issues

Where did the body go? [Unknown, still unsolved]

Is it possible for me to pass through the Hokage's gate? [Unknown, unverifiable, illegal]

Upon returning to reality, where did the old timeline go? [Unknown]

He has a collective term for these questions that will never have answers: traversing the black box.

Fortunately, after so many time travels, he had solved many problems. He glanced at the problems on the paper one last time, took out his phone to search for the current gold price, and found that it was still fluctuating around 380.

However, we are currently in a black swan event period. As we all know, major disasters and wars can cause gold prices to fluctuate wildly. It is not a good time to sell all fifty kilograms of gold.

His house is worth only around one million, so he only needs to sell ten kilograms of gold. The target is small, the value is small, and it won't attract much attention. He can leave the rest of the gold to wait and see.

After setting his goal, he quickly washed up, ate a quick meal, and moved away the clutter blocking the refrigerator and other doors. After the worst months of lockdown, the city was no longer under lockdown, and restrictions had been lifted everywhere. He could leave the city at any time.

After a good night's sleep, he carried a backpack with ten kilograms of gold and took a car directly to the nearest major city to find the largest gold shop that could buy back gold without receipts.

What happened next was quite simple. Since it was a legitimate gold shop, he simply took out ten kilograms of gold, met with the shop manager, and said that the gold was an heirloom, there was no receipt, and he was short of money and wanted to exchange it for some cash.

The jewelry store manager immediately understood the customer's needs and asked if he wanted the safest channel.

Lin Chuan naturally nodded in agreement, but he refused to accept the offer that the clean money buyback price was halved. After negotiating with the gold shop manager, he finally got the buyback price down to 30%, and he got 70% of the original price because he still had to pay taxes.

There was no other way; he wanted safe, clean money, so he had to offer a discount to the other party.

Then came the gold verification, weighing, and payment. The gold shop manager asked him if he wanted to try his luck, saying he could win money at a casino in Macau, and so he went.

A legal casino, legal taxes, a 20% personal income tax, and in the end, the money becomes legal.

After paying the taxes, he returned home with the money, finally able to pay off his mortgage. The money had just been transferred into his bank account when it was deducted from his account along with interest. The bank really didn't want to lose a single penny!

Based on the gold price of 380, his ten kilograms of gold were worth 3.8 million. After a 30% discount, the price would be 266 million. After paying taxes, he only received 2.1 million.

He treated the extra 20,000 yuan as a trip, and by the time he returned home, it was already a week later.

He won over two million in principal, but only 20,000 was actually won. He was quite lucky, considering that some people clear out their lottery inventory every year, sometimes hundreds of millions. Their luck is truly unparalleled.

There are also shell companies, wine, web series, movies, antiques, artworks, electronic currency, delayed phone bills, live streamer tips, stocks, and so on. Anything that can be traded can be attributed to good luck; it's impossible to manage them all.

After receiving the money, he immediately went downstairs to the night market and had a barbecue. Then he went home and slept soundly for two days.

He doesn't need to worry about the mortgage, and he has enough supplies to survive. Even if the city is locked down for three to five years, he won't starve to death. He will start his time-traveling journey again.