This call was a bolt from the blue!

At that time, Ding Beihai was still instructing new students to do experiments, and suddenly received a call from his mother.

On the other end of the phone, my mother cried and didn't explain the matter, only knowing that my father seemed to have a cerebral thrombosis and was now being rescued in the hospital, and the specific results have not yet come out.

Ding Beihai hurriedly explained the affairs of the institute and rushed to the hospital.

When he arrived on the floor where his father was, he saw his mother slumped on the ground, her eyes desperate and empty.

Ding Beihai knew that he was late!

Ding Beihai knelt down in front of his mother, and the two hugged each other, hiding their faces and crying!

Dad, although he has always disapproved of his own research, he has always had a knife mouth and a tofu heart. Not only did he agree to sell his family's house and buy research equipment for himself, but he also provided a lot of financial support. Although these supports were sent as a mother, Ding Beihai naturally knew in his heart that there were some aspects that only men could consider!

"Mom, why did Dad suddenly get sick?" Ding Beihai looked at his mother with red eyes and asked.

"Beihai, in fact, your father was already sick when he first sold the house, but he was afraid that you would be distracted, so he never told you!" Mom wiped away her tears with her shabby sleeves and continued, "At that time, your father said that he probably didn't have a few years left, so he discussed selling the house with me to give you the greatest support. During this period, I also fell ill a few times, but I was afraid of delaying your research, so I never told you. Your dad is actually very supportive of your career, and often asks me to come over to see if you need any help, and if you have free time, he asks you to come back to see him, and by the way, about getting sick. But you've been busy, so you've been delayed. I often tell him that our son will be out soon, so let's try to disturb him as little as possible. But I really didn't expect that the onset of the disease would be so fast this time, and the result was ......"

"Mom, I'm sorry Dad, and I'm sorry for you! It's all my fault! If I hadn't been doing research in the first place, I wouldn't have ...... this day."

"Beihai, don't say that, we have always been proud of you as a son."

"Mom, it's too lonely for you to live by yourself in the future, why don't you move to the research institute to live with me, I also want to see you more in my spare time!"

"Hey, good!" Mom's eyes suddenly flashed with tears of relief.

……

But things are not as easy as they seem.

After the funeral for his father, both mother and son have no financial resources, which makes the already cold family even worse.

Mom discussed with Ding Beihai whether she wanted to go out to work and earn some living expenses.

"Don't make trouble, how old are you, I'm such a big person, do you still want to let you raise it?"

"Oh, Beihai, you can do research with peace of mind, and leave the matter of earning money to support your family to your mother!"

After many excuses, Ding Beihai couldn't resist his mother, so he nodded and agreed.

Soon, the family's life became rich again. As for what his mother did, he just told him, "It's sweeping the floor in the building."

But not long after such a day, Ding Beihai inadvertently found that his mother's behavior was a little strange.

"Mom, are you sick to your stomach?"

"Oh, no, no!" Mom quickly shook her head, "People are old, that's it, just rest and rest." ”

"Oh, didn't you say work isn't tiring at all?"

"I just don't get tired, otherwise I won't be able to stand up. Okay, okay, leave me alone, tell me about your research process. Mom quickly changed the subject.

"The research process?" Ding Beihai thought for a while, and tried his best to explain in a language that the physical blind could understand, "We guess what these dark matter and dark energy, which account for 96% of the universe, are. I now speculate that time, space, and even this dark matter are all matter of a higher dimension of the universe. Ah, don't worry, I'll give you an example. How so? It's like an ant crawling on a two-dimensional plane of paper, and there is a gravitational object in front of it, but the ant can only see the two-dimensional flat world. So this very large object, in the eyes of the ant, may be a round or square projection. According to this point extended to our three-dimensional world, the universe we can see may only be a projection of objects in five, six, or even higher dimensions in the three-dimensional dimension......"

"Ah, well, Mom should go cook."

"Hahahaha!" Mother and son burst into laughter.