After Lao Yue returned to the branch with the closed-door reminder device, he handed it to Li Cheng and told him that the device cost only ten yuan at most.

Li Cheng smiled and said, "It seems that my suggestion is low-cost and high-effective!"

Lao Yue said: "It can be done at a high cost..."

He repeated to Li Cheng what the man from the electronics city had said.

Li Cheng shook his head and said, "Just ten yuan for the purchase, not a cent more. As for him going south to process it, that's his business. We'll just give him ten yuan."

Lao Yue was a little confused about Li Chengcheng and asked doubtfully, "Ten yuan, how do you make money?"

Li Chengdao: "What money? Did I say I was going to make money?"

Lao Yue was stunned and said hurriedly: "Why are you busy with this if you don't make money?"

Li Cheng smiled and said, "Your mindset is too narrow. Also, don't you think about it? I was the one who suggested installing this thing, and I hired someone to make it. If I mess with it, someone will use it to make trouble in the future."

Li Cheng thought about it and realized that whether it was a branch or a city branch, they were all places with complicated interpersonal relationships and a lot of trouble. Moreover, some people had too much free time and would deliberately cause trouble for others.

Li Cheng didn't take the money he got, either because he looked down on such a small amount of money, or because he had a big picture and didn't want the immediate petty profits.

To be honest, Lao Yue admired Li Cheng at this time, thinking that he was not a person who was greedy for money. At the same time, he felt it was a pity that such a good opportunity to make money was given up.

Just when Lao Yue was feeling both admiration and disappointment towards Li Cheng, he heard Li Cheng say, "Actually, it's not that you can't make money, you just have to be more clever about it..."

Lao Yue's eyes suddenly emitted a cunning look.

Li Cheng told him that there was nothing to do with the closed-door reminder, but there was an installation fee required when installing it.

Hearing this, Lao Yue started to get excited.

Lao Yue's father is a plumber. Now he has opened his own shop and runs around the city every day, doing things related to water and electricity. Installing a small closed door reminder is a piece of cake for Lao Yue's father.

Lao Yue was excited because he felt that Li Cheng was very considerate. He thought of his father and did not forget him when he had a good opportunity.

"Brother, I understand. I'm going to call my dad and ask him how much it costs to install this thing."

Li Cheng nodded, then took the closed-door reminder device to the city branch.

The next day, under the supervision of the director of the city's luggage department and others, Lao Yue's father personally installed the closed-door reminder on the buffer door of the savings bank where Yue Xiaoyun worked.

While Lao Yue's father was operating, Li Cheng, Lao Yue, and Yue Xiaoyun stood by and watched. Standing opposite were the city branch's baggage director and several others.

Li Cheng was a member of the branch and also a proponent. Lao Yue represented the branch's security department. The head of the security department, Lao Xu, was still in the hospital, so Lao Yue became the representative.

In fact, there is another more important reason, which is that the person who installed the door-closing reminder was hired by Lao Yue.

As for why Yue Xiaoyun hadn't returned home after work, it was because her father and brother were here. Another reason was that Li Cheng was also here.

Yue Xiaoyun was busy running around serving tea and water to Director Li and Li Cheng, smiling and looking very happy. Director Li looked at her twice more when he saw her.

Li Cheng looked calm and composed, and occasionally joked with Lao Yue's father.

"Uncle Yue, please install it properly. Your daughter is sitting in here!"

Lao Yue's father had a good temper. While working, he said, "Li Cheng, I must do this well. Not to mention that my daughter is sitting in it, I also want to make this thing you came up with work."

Director Li laughed when he heard the conversation between the two, and then waved Li Cheng over.

After Li Cheng walked over, Director Li whispered, "Li Cheng, President Gao said he'd like to invite us to dinner. You can come with us after we finish this."

Li Cheng nodded and said, "Just me?"

Director Li was stunned for a moment, unsure how to respond. It was President Gao who was treating, so it was perfectly fine for him to bring Li Cheng along, but it seemed a bit inappropriate to bring Old Yue's family along as well.

At this time, Lao Yue’s father suddenly said, “Okay, we can give it a try.”

Director Li quickly said, "Okay, let's give it a try."

So, except for Yue Xiaoyun, everyone else stood outside the hall. Yue Xiaoyun stood inside the counter, coughed pretentiously, and then opened the door inside...

"Please pay attention to closing the door, please pay attention to closing the door..." The door closing reminder sounded.

Everyone laughed. Yue Xiaoyun stood between the two doors, then turned around and closed the door that had just been opened, and the sound stopped.

Yue Xiaoyun opened the second door leading to the hall, and the door closing reminder sounded again.

It was a success and everyone applauded happily.

At this time, Director Li, the highest leader standing here, wants to say a few words.

After the applause died down, Director Li walked over and carefully examined the installed closed-door reminder. Then he turned to the crowd and said, "This buffer door is finally perfect..."

Before he could finish, Lao Yue started clapping...

The matter was settled. Director Li was responsible for reporting to the city branch leaders and relevant departments, while Lao Yue, the branch manager, was responsible for supervising the installation of the closed-door reminder.

It seemed as if Li Cheng had nothing to do with it, but everyone knew that Li Cheng's name would be mentioned again and again by those leaders on various occasions for a long time.

That was enough for Li Cheng. In a company with thousands of employees, the leaders couldn't remember many people's names, let alone a small office clerk like Li Cheng.

The work was done beautifully, and everyone was delighted. President Gao seemed to have anticipated this outcome. Although he was too busy to personally visit the savings bank, he did manage to treat everyone to a meal at the hotel.

At Li Cheng's request, Lao Yue's family and two other colleagues from the savings bank who had not yet returned home from get off work went to the hotel together.

President Gao was delighted to see this, and felt that Li Cheng was very capable. It was obvious that the installation of the closed-door alarm could only be done after the savings bank closed and the cash and bills were taken away.

This would delay these people's lunch break. Li Cheng called them all together to give President Gao an opportunity to care for his subordinates.

To be honest, President Gao hadn't really thought of this. Seeing that there were many people coming, President Gao arranged a large room.

The two tables in the room were packed. The food and wine were excellent, and everyone was very satisfied with the food.

Li Cheng sat in the lively hall, filled with the aroma of food and wine, but he was wondering what Yao Hong was doing. How could he be absent from such a drinking occasion?