On July 15, 1979, Hong Kong was a little sweltering under the scorching sun, but for many Secondary 6 and 7 students who had taken this year's Higher and Advanced Examinations, their hearts were cold.

The Higher Cheng dù Hui Examination and the Advanced Cheng dù Hui Examination are the entrance exams for the University of Hong Kong and the Chinese University of Hong Kong respectively, because there are only these two universities in Hong Kong, so it is not an exaggeration to call it the college entrance examination. CUHK's academic system is four years, which is more than one year in Hong Kong, so Secondary 6 students who only need to study for one year of matriculation can apply for the examination, so the number of applicants will be higher and the admission rate will be lower.

At Shing Yan Middle School, No. 11 On Tin Street, Kwun Tong, East Kowloon, the long queue at the entrance of the school office moved forward slowly, the crowd in line was quiet, and the atmosphere was a little depressing. Although Li Xuan's expression was calm, there was still a trace of nervousness in his heart, which could be said to be the moment that changed his fate.

Li Xuan's family's economic conditions are not good, so he is studying in a one-year preparatory department, this time it is a desperate gamble, and if he fails the exam, he can only find a job, and there is no chance to study for another year to take the HKU exam.

Although he was confident that he had done very well in the exam, his results did not come out, after all, he had no bottom in his heart. After a while, it was finally his turn, Li Xuan exhaled lightly, and said to the teacher in the window: "Class A No. 04, Li Xuan!"

The teacher quickly took out a sheet from a stack of papers, glanced at it, and suddenly a smile appeared on his originally expressionless face, and he nodded kindly at Li Xuan and handed over the note.

Li Xuan took the note and immediately glanced at it, and a happy smile immediately spread across his face. General Mathematics, Advanced Mathematics and Physics are all A, and Chinese Chinese and English are B. Such excellent results were enough for him to obtain an entrance degree to the University of Hong Kong Chinese, and even if he applied for a full scholarship, he was very confident.

"Li Xuan, how did you do in the exam?" A tall, thin four-eyed boy with black-framed glasses patted Li Xuan's shoulder from behind.

"Well, it's good, three A's and two Bs!" Li Xuan turned his head and saw that it was Liu Zhihao from Class C, "Did you do badly in the exam?"

"How can you tell?"

"The hair is fluffy, the eyes are blank, this face is like a dried bitter melon, and the smile is more ugly than crying, you said that I wouldn't be able to see that you failed the exam!" Li Xuan jokingly patted the other party's somewhat thin face, "Let's go, please go drink milk tea and comfort your injured heart!"

"Alas, you are happy, you can escape and ascend to heaven, I have to continue to go back to study! This result, there is not much hope for the entrance examination of Hong Kong University next year, it is better to come out and work directly!" Liu Zhihao stretched his face and said depressedly. He was in Class C for a two-year preparatory course, with one year left.

"It's a disadvantage to work in Hong Kong without a diploma, do you want to work in a factory? Don't worry, if you can't be admitted to HKU next year, your old bean will send you abroad to study!" Li Xuan comforted, Liu Zhihao's family conditions are very good, his father is an orthopedic surgeon, enough to support his son's study abroad expenses.

In Hong Kong in 1979, there were only two universities, the University of Hong Kong and the Chinese University of Science and Technology, and the University of Science and Technology was still seven or eight years away from the start of preparations.

According to the Hong Kong Department of Education, only two out of every 100 Hong Kong school-age students have the opportunity to enter universities, which shows how fierce the competition in Hong Kong's college entrance examination is.

"But I don't want to go abroad, I don't know the place well, and I don't even know a friend!"

"Okay, be happy! Isn't there still a year left! You'll be on the back of the beam starting tomorrow, and I'm sure you can do it!"

Hong Kong has a British-style academic system, and there is a preparatory department between secondary school and university, and the application for a foundation degree is based on the results of the HKALE-based examination at the end of Form 5. Because the HKU and CUHK systems are different, there are one-year and two-year matriculation courses. Li Xuan and Liu Zhihao were at the same table before the re-assignment of the preparatory department, and the relationship between the two was very good.

He and Liu Zhihao have known each other for so long, and they know very well that his friend has a bad personality, and he will not take this kind of thing to heart at all if he does not do well in the exam, and he will leave it behind when he sleeps and wakes up tomorrow.

The two went out of the school gate and found a tea and milk tea shop on the corner to buy two cups of milk tea. Liu Zhihao was going to Repulse Bay Beach to go crazy, but Li Xuan didn't want to run that far, and he had to go to work in the afternoon, so the two of them parted at the door of the tea restaurant.

The family lived in Sau Mau Ping Estate in Kwun Tong, Kowloon, a large public housing estate built by the Hong Kong government in the late sixties. His parents worked in a garment factory in the nearby Kwun Tong Industrial Area.

Hong Kong has a small number of people and housing prices are very expensive, and the real estate developers will not design very large units when they build buildings, with two bedrooms and one living room only 450 square feet, and a house above 1,000 square feet is considered a luxury house. In the low-cost public housing estates, the design is even more compact, and the Li family of five only applied for a two-bedroom apartment of less than 400 square feet.

Hong Kong is a British colony, so the imperial unit is commonly used in measurement, and one square foot is referred to as one foot. One square metre is about 10 feet.

"Brother, you're back, how are your grades?Can you be admitted to CUHK?" As soon as Li Xuan entered the door, his sister Li Ying, who was watching TV in the small living room, immediately ran up to him.

"Three A's and two B's, it's no problem to study at CUHK, and I guess I can apply for a full scholarship!" Li Xuan patted his sister's head and said with a smile.

"Oh, why don't you go out and celebrate?" the little girl said with a roll of her eyes, and immediately put her arms around her brother.

"I'll celebrate when it's time for dinner, grandma will come back from work and ask her to cook a few good dishes!" Li Xuan knew what the hell his sister was doing, and took out a ten-yuan Hong Kong dollar from his trouser pocket, "Oh, this is your pocket money, don't spend it indiscriminately!"

Li Ying snatched the banknote in Li Xuan's hand, stuffed it into her pocket with a smile and put it away, usually Lao Dou gives five immortals or one piece of pocket money, and ten yuan is a huge amount of money for her: "The second guy is the best for me!"

Li Xuan's old bean name is Li Haichuan, and he used to be a fisherman on Lantau Island. When Li Xuan was five years old, Li Haichuan encountered a strong wind when he went to sea to fish, and the small fishing boat capsized directly after encountering wind and waves, and was lucky to be rescued by a passing freighter after floating in the sea for a day. After Li Haichuan escaped, he did not dare to go to sea to fish again, and found a job in a factory in Kowloon, a city in the city. Later, he was lucky enough to apply for the Sau Mau Ping Public Housing, which had just been built at that time, so his family moved to Kwun Tong to settle down.

He and his wife Liu Huili had two sons and a daughter. Li Xuan is the second son, and there is a big guy named Li Ke who is two years older than him. Li Ke is not as good at reading as his younger brother, he dropped out of school after finishing the third year of secondary school, and at first he worked in an electronics factory, but he quit after a few days of work because he was too tired of work, and now he is watching in a video hall.

There were still some leftovers left over from last night in the kitchen, Li Xuan cooked the rice with a rice cooker, had lunch early with his sister Li Ying, and then the two of them went out together. Li Xuan went to the company for afternoon work, and Li Ying was sent by her to report the good news to her parents who worked in the garment factory, after all, the whole family knew that today was the day when the college entrance examination results were released, and they must be in a hurry to wait for the news.

"After going to Lao Dou's factory, I'll come back to do my summer homework, I'll check it at night!" Li Xuan told his sister, "When you come back, remember to call the big guy again and ask him to come back for dinner, I just called him and didn't get through!"

"Got it, the second guy, you are more talkative than grandma!" Li Ying pouted and glanced at her second brother.

The college entrance examination is completed at the end of May, and the results will not come out until mid-July, and university admission will not be until September. Li Xuan naturally didn't let these few months go to waste, and just after the exam, he found a summer job in a small company doing import and export trade.

At that time, the company, Hengtai Trading Company, was urgently looking for a temporary translator who was proficient in computer expertise. It's 1979, personal computers aren't on the streets, and computers are still a very expensive and high-tech thing for most people.

The Apple 2 computer launched by Apple two years ago is priced at 10,000 Hong Kong dollars in Hong Kong. In this era when the monthly income of ordinary people is only 1,000 yuan, such an expensive thing is definitely a luxury for ordinary Hong Kong people.

Hengtai's address is in an office building in North Point, Hong Kong Island, opposite Victoria Harbour. When Li Xuan went out from home, he had to take a bus to Kwun Tong Pier first, and then take a ferry to North Point Pier across the sea.

Sitting on the ferry crossing the sea, Li Xuan chose a seat by the window. Outside the window, you can see the rippling sea, and to the west, you can see the silhouette of Central in the distance. The majestic Central skyline has not yet taken shape, and the blueprints of the famous landmarks, such as the Bank of China Tower, the International Commerce Centre and the International Finance Centre, are still in the minds of architects.

The tallest building in Hong Kong is Connaught Building, completed in 1973, with a height of 178.5 metres and a total of 52 floors. However, its status as the tallest building in Hong Kong is about to be lost, and the 216-metre-tall 66-storey Hopewell Centre has been topped out and is about to take its place.

Li Xuan couldn't help but sigh with emotion, the vicissitudes of life, things are people, who can imagine that the rebirth of the crossing, this kind of plot that will only appear on the Internet, will one day fall on his head.

Didn't he accidentally fasten his seat belt before the plane landed, and how could he just happen to have a flat tire on the plane? Boeing, your plane tires are made by Kumho! Li Xuan was tragically thrown out of his seat in the sudden turbulence of the plane, his head hit the floor heavily, and then he lost consciousness all of a sudden......

When he woke up again, he found that he had become another Hong Kong teenager with the same name and surname, and time had also gone backwards, no longer in 2015 in the 21st century, but back in 1979 all of a sudden.

In 1979, the curtain of China's reform and opening up was slowly opening, and Bao'an, on the other side of the Jiehe River, was transformed into a deep-sea special economic zone. In 1979, Margaret Thatcher became the first female prime minister in Britain's history, and she would use her iron fist to win the reputation of "Iron Lady". This year, the Iranian hostage incident broke out, and the United States' former Middle East ally suddenly became the number one mortal enemy. It was also this year that the Soviet Union invaded Afghanistan, the red empire that once made the entire Western world tremble, sounded the death knell for itself with a war that did not outweigh the losses.

As for Li Xuan's semiconductor major, Intel released a castrated version of the 8086 processor - a cheaper 8088 processor. Two years later, IBM used this processor to launch the PC, which opened the curtain of the personal computer era and profoundly changed the world.

In the spring of 1992, one morning after the great man's southern tour, he was found by a kind aunt in the toilet of the railway station of the Shenhai Special Economic Zone, and was sent to the social welfare institute by the police uncle after calling the police, and then he grew up with this young city.

Li Xuan initially majored in software engineering as an undergraduate, but later thought that he was unwilling to become a coder after graduation, so he transferred from the School of Computer Science to the microelectronics major of the School of Information Engineering in his sophomore year.

After graduating from his bachelor's degree, Li Xuan was very fortunate to apply for a full scholarship from a prestigious university in the United States to study abroad for graduate school with excellent grades. After obtaining a master's degree, Li Xuan found a job in a large company in Silicon Valley doing low-level design of embedded systems, with an annual salary of 120,000 yuan, which can be regarded as reaching the level of the middle class in the United States.

Two months ago, Li Xuan met Chief Engineer Li of a well-known high-tech company in the Deep Sea Special Economic Zone while attending a technical seminar, and he was invited to return to China to work. Li Xuan, who has been away from the Deep Sea Special Zone for eight years since he went to college, suddenly has the urge to go home all the time, although Shenhai does not have his relatives, but has all the memories of his youth.

So Li Xuan resolutely resigned and took a flight from San Francisco to Hong Kong, but he didn't expect an accident when he was about to arrive at his doorstep......