"Er..."

"Wow, are you awake, William?"

"What...... ?"

"William! You woke up finally!"

"Who? What wake up? Do what?"

William opened his eyes. He found himself lying on a soft bed, dressed all in white, and surrounded by the others. They all smiled with relief seeing William open his eyes.

"Where am I? How long did I sleep? Are you guys all right? Did the antimatter bomb ever explode?" He was at a loss and asked the questions in succession.

"Aha, you're all right, Master!" A small robot said, jumping excitedly on top of William as he climbed out of the backpack. Then, a door not far from the bed opened softly, and in came several more robots. They were all William's assistants.

"Hello, Master!" A little robot crawled up to William and stroked his forehead with its hands. It said, "Don't worry, you're all right."

"Oh, that's good." William was relieved and replied, "I want to know exactly what happened after we passed out, and where I am now."

"Don't worry, I'll let you know soon. Just a minute, because I'll get your computer." The robot went out again after finishing speaking.

Ranran came over and sat down on the bed. She smiled at puzzled William. Then she unbuttoned her pink dress to reveal a white clothes exactly the same type as the one William was wearing.

"Oh? Why are you wearing this?" Asked William, puzzled.

"Ha ha ha, it's a nurse's uniform! That's because I've been taking care of you with the other robots!" She said, smiling happily.

"What? I am even more mixed up. Wait, what's all this about?"

"Hee-hee..." Photon and Natalie kept giggling at the bed, "Master, you will know in a moment. And you'll know more than just what you want to know."

"What?" William thought everyone else was mysterious. He guessed that they were deliberately withholding some important information.

"I know what you're thinking, Master." Rebecca laughed, "But there's no way we can withhold information. Here comes the robot nurse!"

The door opened again. The robot nurse carried William's computer to the bedside and sat down in a chair. "Master, see if you can sit up now." Said Rebecca.

William did so. He recovered well and sat up soon. "Look, your computer has been upgraded!" The robot handed him the computer and a note.

William looked at the note. As he watched, he was more and more surprised.

The following is a list of the main computer configurations:

CPU Made of graphene, 128 bits long, 8 cores and 16 threads, with a main frequency of 150 GHz and a maximum frequency of 1.7 times the main frequency

Installed Memory Made of graphene, 128GB, with a reading speed of 1 nanosecond and writing speed of 3 nanoseconds

GPU 1 * 32GB integrated GPU + 1 * 128GB standalone GPU

Storage 1 * 4TB SSD, with a reading speed of 3GB/s and writing speed of 2.5GB/s

Power Supply Suitable for 110-250 volts alternating current, with a rated power of 200 watts

Batteries 11.1 Volts 80 Ah graphene batteries

There was a list of other configurations on the back of the note.

"Why do you give me this?" Asked William, puzzled.

The robot smiled mysteriously and replied, "Master, turn on the computer and find the folder 'Video'. There is a video 'To William' in it. Play it and you'll see."

So William, with questions, turned on his computer. The upgrade was so helpful that it only took him a total of seven seconds to go from pressing the switch button to getting into the operating system. Following the robot's reminders, he found the video and opened it.

A familiar face appeared on the screen. That was his father, Mighty. "Dad!" He cried excitedly. Every muscle of his face was pulled by him to bring out his brilliant smile. "I haven't seen you for ages!" He danced and danced excitedly, though he woke up on August 31st, 2135, which meant he had only been away from home for about a month and a half.

Now he wanted to go home even more. "Dear son," Mighty said kindly, "when you watch this video, you will have returned safely to the universe where Earth is. You must be wondering where you are now. Well then, let me tell you.

"You're now in the first intelligent hospital on the newly discovered habitable planet δ-987c. Humans have never been to this planet, so you are the first alien. The robots reached here before you, though. They arrived here in another spaceship. They carried some lightweight 3D-printed parts and quickly assembled this hospital.

"You slept for a whole week before you woke up. During that time when you were sleeping, your friends woke up one after another and took care of you to varying degrees. I suggest you give Ranran a big thank you, because she and the nurse robot in the hospital are the hardest working.

"Fortunately, your weapons are strong enough. You just managed to damage the antimatter bomb. But the most important thing is that you really exceeded our expectations! It is beyond my expectation that you were able to fight as hard as you could when you were in that pain.

"And you want to know what happened after you passed out, don't you? All right. Thanks to the large storage capacity of the robots we sent out, otherwise you wouldn't be able to know about all the details.

"The moment you flew out of the five-dimensional space, the antimatter bomb exploded. But that was because it fell off the spaceship and came into contact with the real matter of the universe, not because it hit you. This powerful energy was converted into light energy, illuminating all the dark areas within a 100 light-year radius. The shockwave that accompanied the explosion gave the spaceship an extra brief thrust. The ship then went on autopilot, guided by the computer, and landed in front of the hospital on this planet.

"Then the robots who work at the hospital saw your ship coming. They immediately and methodically brought you in to let you rest. Photon, Natalie, Rebecca and Aria woke up first. They worked with the robots to take care of you and Ranran. Two days later Ranran woke up too, so she began to take care of you. Five days later, which is now, you woke up.

"I'm surprised at your behavior, son. I can't imagine how much pain you had had with fighting in the five-dimensional space. Your partners' describing abilities are excellent, but I still can't quite experience it. I can only express my feelings in one word, and that is: unbelievable. I suppose it was Handel's words that sustained you in that deadly pain.

"Yes, humans are small, but they can also be great. Humans are small because they are far behind the vast universe in space and time; yet humans are great because their strength of faith and will can be many times harder than steel, just like you.

"I have also changed my view of you: I was always worried that you would lose your confidence, your motivation to strive, and your chance to shine brightly. Now, I no more worry, because you will never lose heart, never stop fighting, and never hide your light."

It was the first time in William's life that he had heard him praised so unabashedly. There was a slight shiver in his heart.

"Yes." He thought, "If I hadn't believed I can come back safely, I would have been hit by the antimatter bomb."

Mighty said, "Finally, I have a very important message for you. There will be a heavy rain soon. When all the clouds have cleared, you can see a magnificent rainbow bridge. However, because the light from the mother star is different from sunlight, and the atmosphere is different from Earth's, the colors of the rainbow will not be what you are familiar with, but they will still be pretty. At the top of the rainbow bridge there will be a flying robot waiting for you. You can fly up using the rocket backpack provided for you in the hospital hall. The robot will tell you a top secret about that universe!

"You have recovered well enough to go home. Go out and get a feel for the environment of this planet. If you want, you can stay for a few more days at the undersea villa on the planet α-3665D. I'm glad you're safe, son. Mom and I will wait for your return!"

The video was over. William was excited, surprised, and curious. "I did it! I did it!" He said to himself, "I couldn't believe I can ever safely go home! Ha ha!" His hearty laughter echoed through the room. It was like a virus, quite infectious. Soon, everyone in the room was laughing out loud. "William did it!" They cried together.

He put on his shoes, stepped out of bed, and found himself unusually light. Within seconds, this earthman was walking at his accustomed pace. He clapped his hands excitedly and said, "Oh! Great!" The others said the same.

Everyone heard the thunder. They all looked out of the window, seeing the dark clouds rapidly enveloping the hospital like a cage, and the sky darkening. Occasionally they could see the tusks of lightning gnawing the air among the clouds.

Then raindrops, the size of soybeans, fell and banged against the windows with loud noises. Thunder and rain were mixed to form a symphony of nature that was better than any man-made music.

William looked up at the sky with a smile on his face. He wondered when the rainbow bridge would appear and what the flying robot would say to him.

"That's really something to look forward to," He thought.