After watching the video, Xu Lin understood how to operate the econometrics paper: first, arrange the data in a table according to a certain format, then import it into the econometric software, and finally start entering some specific commands in the software's input box. After the command is entered, the software will provide the analysis result based on the data and the command entered.

At the beginning, Xu Lin made quite a few mistakes, but then, by watching the video and repeatedly pondering over it, he finally got it right.

Furthermore, Xu Lin used more advanced econometric methods, avoiding those beginner-level analyses, because doing so makes the paper reach a higher standard.

That afternoon, Xu Lin spent his time helping Ning Yuhuan with her paper analysis. Honestly speaking, it was quite tedious and boring. Xu Lin felt that doing academic work must be incredibly dull, devoid of any fun. During the undergraduate stage, econometrics papers aren't a particularly difficult thing; for many college students, they're relatively simple. As long as you study slightly seriously, you can complete them. So, when it comes to difficulty, it's not much, but definitely dull.

After a few hours, Xu Lin got all the analysis results he wanted.

When Ning Yuhuan officially writes her paper, she'll just need to analyze according to these results, which is the empirical analysis part of the paper.

"I've compiled all the commands for you, so you can just import them when the time comes."

Xu Lin saved the command file. As long as the data is imported, entering the command file and pressing the Enter key will immediately produce all the analysis results, making everything clear at a glance.

"Thank you, darling!"

Ning Yuhuan was very happy. With Xu Lin's help, she saved a lot of time. She estimated that within this week, she could submit a draft to Professor Huang to see what feedback she'd have.

"What's there to thank for?"

Muah!

Ning Yuhuan leaned over and kissed Xu Lin on the cheek.

"That's more like it!"

Xu Lin pulled her in and showered her with kisses.

At around five in the afternoon, before nightfall, Xu Lin and Ning Yuhuan went out.

In late December, it's already dark by six o'clock.

They had dinner in the evening and then took a boat ride, only returning home after eleven.

The night passed in silence again.

On Wednesday and Thursday, Xu Lin spent the daytime studying with Ning Yuhuan. While Ning Yuhuan was researching her paper, Xu Lin was busy with his own affairs nearby, and at night, they enjoyed their life as a couple.

For two nights, or counting Tuesday night, for three nights, Xu Lin and Ning Yuhuan stayed up until after four in the morning.

It's fair to say that the time they hadn't spent sleeping together was made up for in these days.

Ning Yuhuan was not lightly bullied.

By the time they parted on Friday morning, Ning Yuhuan even felt a sense of relief.

"I'm going to visit my mom during the New Year's holiday, so I won't be in Jiangdu. Just take care of yourself then, or you can hang out with your roommates."

Xu Lin advised, "Remember to contact me if something comes up."

"Mm-hmm!"

Ning Yuhuan nodded.

Only then did they part ways. Actually, Ning Yuhuan stayed at the duplex to continue her paper. As she had no classes in her sophomore year until her finals started on January 9, giving her more than two weeks of review time without classes.

On Friday, Xu Lin only had classes in the morning.

After class in the afternoon, Xu Lin set off to the high-speed rail station with Rong Xiyi.

"Xu Lin, help me pull the suitcase; it's a bit heavy."

Rong Xiyi looked pained.

"Carrying so many things?"

"I'm just buying gifts for my mom."

"And some of your random makeup and clothes, right?"

"But Xu Lin, you have clothes in there too!"

"I only have a T-shirt, a pair of underwear, and long pants. Folded, they're not even ten centimeters thick; they fit in a small bag. Whose stuff takes up more space?"

"But the suitcase is really heavy."

"On the way back, just ship it directly. I won't be handling the suitcase then."

"Got it."

Finally, Xu Lin helped pull the suitcase.

The high-speed rail journey to the provincial city took about two hours, plus an hour for waiting and walking, making it a little over three hours in total.

Xu Lin and Rong Xiyi had a double seat, with Xu Lin by the window.

Later, because Rong Xiyi didn't feel comfortable sitting, she got up and sat on Xu Lin's lap.

"Xu Lin, I want to sit on you and watch the scenery together!"

"Alright, sit tight."

"Hmph!"

Rong Xiyi sat comfortably, leaning against Xu Lin's chest, giving him a kiss on the cheek. Then she asked him to wrap his arms around her from behind, which Xu Lin did, and a strong sense of security enveloped her.

She was now very dependent on Xu Lin because only Xu Lin could often care for her by her side. For a girl like Rong Xiyi who lacked love, Xu Lin's appearance was like the brightest light in her life. Although Xu Lin sometimes cursed and complained, Rong Xiyi, who understood Xu Lin, knew that being with him meant focusing more on his actions than what he said. For example, even if he said he wouldn't carry the suitcase, Xu Lin would still take care of it.

This week, Rong Xiyi was extremely resentful because from Monday to Thursday night, Xu Lin was with Ning Yuhuan, and he didn't even have a meal with her. No wonder Rong Xiyi felt aggrieved.

Time reached three-thirty in the afternoon.

Xu Lin and Rong Xiyi exited the high-speed rail station of the provincial city.

By then, Ms. Ren had already waited outside for a long time. As soon as Rong Xiyi saw Ms. Ren's figure, she eagerly quickened her pace towards her.

Excitedly shouting, "Mom!"

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