Affection System: I have everything the goddess wants.

She knew in her heart that, in Cao Xu's heart, they were ultimately different from Tao Jiayi.

"Don't be so sad. We can hang out together sometime. I don't know if Jiayi has any other friends, but if she's willing to hang out with you guys, I won't object. However, we need to agree on some rules."

He paused, then his tone became serious: "First, Jiayi absolutely cannot bring anyone to the apartment she lives in, including your friends."

Second, we must stop letting Jiayi associate with other young men with bad habits, and prevent her from being led astray by them.

Third, you yourselves must remember that you must never touch gambling or drugs; this is the bottom line.

If I discover that any one of these three rules has been violated, we will sever all ties completely.

After saying that, he softened his tone and added, "I can reimburse you for things like shopping, eating out, or buying small items. Giving you some pocket money is also fine. I've already said you're very sensible. As long as we maintain this level of understanding, we can get along well in the future."

Jiang Yaru nodded vigorously, a look of joy on her face, and said sincerely, "Brother Xu, don't worry, Xiao Lü and I will definitely find serious jobs in the future and never hang out with those young geeks again."

I will definitely keep an eye on Jiayi and make sure she doesn't do anything to betray you.

Cao Xu chuckled and teased, "You can get lost now. Take care of yourself first, or you'll break the rules yourself. Hurry up and eat, then I'll take you to see a house."

Jiang Yaru and Xiao Lü exchanged a smile and quickly sped up their eating.

After finishing their meal, the group packed their belongings and went downstairs to check out.

This time, I stayed in a two-bedroom deluxe suite for two nights. In addition to the meals I ate at the hotel, the red wine and champagne I drank, and the replacement bed sheet I paid for, the total cost was more than 3 yuan.

The three traffic light enthusiasts watched Cao Xu casually scan the code to pay, and couldn't help but click their tongues in amazement. Brother Xu really spends money like water.

Cao Xu drove the three of them straight to Jin Daheyuan.

As the car entered the residential area, he went to the property management center with ease to complete the check-in registration procedures. He registered his and Tao Jiayi's owner information, as well as his license plate information. Afterward, he received the house key, community access card, and the property certificate that had already been processed in the system from the property management staff.

The house rewarded by the system is located in Zone E of Jindaheyuan. The community is a low-density multi-story villa, without the oppressive feeling of high-rise buildings. Their house is on the top floor, the 6th floor, with two households per floor.

The community boasts a prime location with convenient transportation and is surrounded by shopping malls, supermarkets, and hospitals, offering a comprehensive range of commercial amenities.

What's even more remarkable is that 70% of the residents are faculty and staff of Jinling University, resulting in a high level of resident quality, a high safety factor, low population mobility, low plot ratio, high green coverage, and maximum living comfort. Currently, the average price in the community is around 3 yuan/㎡.

This place is only 4 kilometers away from Jincai University, where Cao Xu studies, and it only takes about 10 minutes by car, so it's very convenient to come here.

The house has a layout of three bedrooms, two living rooms and two bathrooms, with a building area of ​​135 square meters. The master bedroom, guest bedroom and living room are all facing the sun, and there is plenty of sunlight as soon as you enter the door, making it warm and bright.

The interior is luxuriously decorated and fully furnished with all the necessary furniture and appliances. The sofas, bedding, and kitchenware are all brand new, so you can move in immediately. The double balcony design allows you to dry clothes on one side and place a tea table on the other, making it a very pleasant place to sunbathe and enjoy the view in your leisure time.

Cao Xu led the traffic lights into the house. As soon as the three of them entered, they were shocked by the scene before them. Their eyes widened and their faces were full of amazement.

Tao Jiayi subconsciously walked to the balcony, reached out and pushed open the window. The warm sunlight shone on her, a gentle breeze blew by, and a gentle smile appeared on her face, her eyes full of joy and satisfaction.

Jiang Yaru and Xiao Lü walked back and forth in the living room and bedroom, touching the soft sofa and exquisite furniture, constantly exclaiming, "My goodness, this house is so cozy! The natural light is amazing, living here is so wonderful!"

"Jiayi, Brother Xu is so good to you!"

Cao Xu walked to Tao Jiayi's side and gently put his arm around her shoulder from behind: "Jiayi, this will be your home from now on."

In the afternoon, have them accompany you to buy some household items, kitchenware, and your favorite snacks and drinks. As for how to manage and decorate the house, it's all up to you; do it the way you like.

I have to go back to school this afternoon. Message or call me if you need anything, don't feel bad about it.

Jiang Yaru, standing to the side, deliberately pouted and sighed enviously, "Sigh, if only I could live here, my life would be worth it."

"Don't even think about it. This is Jiayi and my love nest. There's no place for you. You'll have to rent your own place, and I can reimburse you for the rent."

[System notification: Tao Jiayi's favorability has increased by 3 point, currently at 76 points.]

Jiang Yaru was overjoyed and quickly said, "Thank you, Brother Xu! That's great! The accommodation problem is solved. Now I can mooch meals from Jiayi, and I can borrow the new clothes you buy for her. Hahaha, this is practically my indirect financial freedom!"

As she spoke, she leaned closer and said, "Brother Xu, you've been so good to us, but I still feel bad about it. I always want to repay you and do something for you."

"Or, I can find you a few more girls, all brand new, of all ages, guaranteed to suit your taste."

Cao Xu coughed twice. Xiao Huang, aside from everything else, is really easy to get along with, but he always likes to challenge his weaknesses and say irrelevant things.

He said seriously, "Don't talk nonsense. I'm not that kind of person. Besides, we must abide by the law and spread positive energy. Let's not bring this up again."

Jiang Yaru pursed her lips and muttered softly, "I understand, it's voluntary."

Seeing her like this, Cao Xu decided not to argue with her anymore. He gave Tao Jiayi a few instructions, then turned around, went downstairs, and drove back to school.

The car came to a smooth stop in the parking lot outside the school. Cao Xu got out of the car, quickly returned to his dormitory, grabbed his textbook and notebook for financial econometrics, and hurried to the teaching building.

This afternoon's major course is Financial Econometrics. This course is quite demanding, being the highest-credit course among all required courses in the third year, and also a core course for the finance major at Jincai University. The teacher has strict requirements, and if you skip class, the probability of failing the final exam is extremely high.

When Cao Xu arrived at the classroom, the bell had just rung. He found a seat next to his roommate and sat down. Just as he took out his textbook, Professor Li, the lecturer, walked up to the podium with his lesson plan and slides.

Professor Li is a senior professor in the Department of Finance, specializing in econometrics. His lectures are rigorous and meticulous, never perfunctory, and he gets straight to the point: "Today we continue with the specification and testing of linear regression models. Last class we talked about the OLS estimation principle of univariate linear regression. Today we will focus on the specification, basic assumptions, and properties of OLS estimation of multivariate linear regression models."

「多元线性回归模型的一般形式Y=β0+β1X1+β2X2+……+βkXk+μ，其中Y是被解释变量，X1、X2……」

I'm so sleepy, what should I do!

How come I can't understand Chinese characters and letters when they're put together?