When the lights come on in Beijing, the financial migrant workers in Xicheng close their computers with the whole universe in them, order a cup of latte in 1982 at Starbucks in Yinglan, and avoid the rush hour at Fuxingmen subway station. Dongcheng media flower rushed into the bathroom for a good dress and high heels, ready to go to Sanlitun about forever; He packed up his Swiss Vigo schoolbag, took off his flip-flops and put on his running shoes for the subway.

At this time, the taxis in the southern city began to gather, past the temple of Heaven holding five houses of the dog walking tuhao, across the Liangshui River, into the indistinguishable east, west and east sea road. Here are a flock of yizhuang true love migratory birds, waiting to flock north.

Many of them will face a journey of more than an hour, spanning 10 rings, back to Huilongguan, Shangdi, Wangjing and even Shunyi.

An hour in a taxi is the land of true freedom. No matter what phone or wechat you have, you can reply: I’m on the bus. This is the vacuum between work and home, the god-given “me talk” time. Yizhuang love migratory bird took out beats headphones, noise off the driver’s nagging. The lights of century Square outside his window reminded him of his fear when he first arrived in Beijing, his ambition, and his intention to commute 100 kilometers a day. True love is not for nothing.

In order to further explore the large-scale migration of true love migratory birds in Yizhuang and collect first-hand samples, we chose the most heart-breaking time — midnight, at jinghai Road subway station, one of the most prominent landmarks in Yizhuang, downstairs of Jingdong Building, a few cars of true Love migratory birds gently landed on the ground.

True love Migratory Bird 1: P Jun, 32, face recognition algorithm engineer of JD Finance, from JD Tower to Tsinghua University dormitory

Mr. P’s hand on the iPhone was shaking slightly, incoherent with excitement. Just now, the face recognition algorithm that he led jingdong superbrain team to study for a year finally made a qualitative leap, and the accuracy rate exceeded most of the third-party technology companies on the market. As the project Leader, the Tsinghua University PhD left it to his excited team to break the news to the big boss. I went downstairs for a smoke, then turned on my phone and called for a cab.

Since Dr. Qinghua came forward, Mr. P has been researching face recognition at JD Finance. Due to the need for financial security, JD Finance decided not to buy but to develop its own technology. P has a PhD in physics, but he doesn’t want to be a physicist.

“John Mauchly, who designed the first computer, ENIAC, was a physicist, as was Dennis Ritchiey, who invented C.” P jun said. In the era of machine learning and artificial intelligence, physicists better at data analysis are invading the computer scientist job altogether.

Master turned the south fourth ring road, Mr. P is still living in tsinghua dormitory, because his wife is a tsinghua teacher. He remembered that a year ago, if he had accepted the teaching position at Tsinghua, he would have been enjoying a long summer vacation. “I really wanted to convince myself to stay, but I couldn’t. Years and decades of research in the academy cannot be put into practice. The real power to change society is in business.”

“Why do you choose JD Finance? Because machines need to analyze large amounts of data to learn tasks. The effectiveness and richness of JINGdong’s data are not inferior in the world. This is the fundamental reason why we were able to overtake third parties within a year.”

P stresses “all over the world.” The third party enterprises they have been targeting are the world’s top enterprises, which means that the laboratory established less than a year ago has reached the international advanced level. In the future, financial behaviors requiring ultra-high accuracy such as facial payment and facial loan will likely go out of the laboratory and exhibition hall and become real life.

“I now want to go to zhongguancun street Shouting, beat you! We’re the best!” Mr. P looked out the window at the empty street. The whole city goes to sleep, unaware that life in the future can be quietly changed at this moment.

True love Migratory Bird 2: Heng Wuke, 23, jingdong Finance rural finance station operation, from jingdong Tower to Songjiazhuang

Songjiazhuang is the starting point of the Yizhuang line, taxi more than 60 yuan, many drivers will abandon the list is not far enough, and pretend not to be online when you call the past. Hengwu guest’s luck is very good today, the first driver of the order readily agreed to pick up.

Heng wuke, a wuhan native who studied at Fudan University as an undergraduate, had never been to Beijing before joining JD Finance. He told his family that he lived on Beijing’s South Third Ring Road, but did not mention that he spent most of his time running around the country’s countryside.

Hengwu Ke is a rural financial station. It is a financial service site that goes deep into villages and towns and even villages. It is operated by local farmers themselves and provides the most basic financial services for villagers in the surrounding areas, such as financial management, loans, online payment and mobile phone recharge.

At the end of the sea road, the car turned onto the fourth ring road. The phone of Heng Wu ke rang. It was a fellow from Anqing, Anhui province. The financial station of this fellow opens tomorrow, he is very nervous, always feel to operating system still have not familiar place. Heng Wu ke sometimes receives 20 or 30 such calls a day. “Like this fellow from Anqing, he is 40 years old and has poliomyelitis. He cannot work in the fields and stays at home all the time. He was the only one in his village who knew how to use a computer. Being a financial stationmaster is a very important thing in his life — this is his first formal job, and it is also the first time that he overcame the inferiority caused by physical defects.” So I listened as this twentysomething spent ten minutes teaching a 40-year-old man thousands of miles away a life lesson about “Don’t be afraid to be yourself.”

Heng Wuke is a finance major. Most of his classmates work in financial Street. “I stand out at every party because of my tan and because of the stories.” When I asked him if he had any regrets about choosing a different path, he said, “I came here as a management trainee. Actually, I have rotated in the investment department and the strategy department. But finally chose rural finance, because it ‘diao’. “There are feelings in it, but you can’t imagine how big the market is without touching the countryside.”

True love Migratory Bird 3: Crow, 34, JD Financial Risk Control Lab, from JD Tower to Huilongguan

Crow, who is 190 tall, curled up awkwardly in his tiny taxi. He had driven himself, but decided to take a taxi for fear of getting too excited about the important call he had been expecting.

He was waiting for a response from a key algorithm at 3M’s research center. Since June 2016, he has been trying to recruit him to his risk control algorithm lab. As the world’s top expert in biometrics, Daniel holds offers from all the top technology companies in China and abroad, with an annual salary of millions and a team of 30 people anywhere on earth. So Daniel didn’t look down on Crow’s little lab he was building.

“This year, it was just a process of poor boys proving their abilities to Bai Fumei.” Crow said. The risk-control lab wants to determine the identity of a user by the force, Angle and tilt of the screen at which different people use their phone. In other words, when you pick up your phone, the machine can determine if “you” is “you.” To realize this application, a large number of new algorithms and models need to be developed, which is an unprecedented task.

With no experience to draw on, these physicists, mathematicians, engineers from Microsoft, SAP, Oracle, And Amazon bought their own books and learned from scratch. “Obviously already successful, but to come to the pain of entrepreneurship.” Crow looked through the lab’s wechat group, though messages were still flashing late at night.

In June this year, the lab obtained an international patent for a risk control algorithm, enabling JD Finance to identify risky users with an accuracy more than three times that of conventional machine learning algorithms. The patent was also included in major European academic journals. “On the same day, I received a phone call from Daniel, saying that you are so amazing. How did you do it without any resources? I said, we have people. It’s not sensationalism. A group of smart people with goals and desires can do something.”

The car has arrived in Huilongguan, but Crow’s phone hasn’t rung. It’s 8:40 local time in Silicon Valley, and Daniel has probably just bought a cup of coffee and is sitting in the warm morning sun, making his final decision. “If he refuses this time, we will wait for him to be tempted next time. We, jingdong Financial Risk Control Laboratory, can match anyone.”

At 5:50, I received Crow’s wechat message, saying that Daniel had agreed to join the team and would start the job next month. At this time of the day is already golden, xicheng financial migrant workers turn off wake up with CNN radio, turn over to continue to sleep; Dongcheng Media flower thought of an interview in her sleep, she jumped out of bed and began to apply facial mask to make up. Beicheng box lunch code farmer finally typed the last code, drew the shade curtain; The birds in Yizhuang, which lives farthest, are already waiting for the bus in the cool morning breeze. They preen their dew-wet feathers for another day of migration. The South, they believe, has a great future.

Liu Kuang, meditation on the Internet, wechat official account: Liukuang110