The soldiers lined up in neat rows, their eyes determined, waiting for the order to march.

The most eye-catching thing are the red cannons pulled by steam carriages.

These cannons are huge in size, with long and thick barrels, as if they can swallow everything.

The steam carriage roared and belched out billowing white smoke, providing a constant supply of power for the cannon.

The people were amazed. They knew that these red cannons would become the killer weapons on the battlefield and bring victory and glory to the Tang Dynasty.

As drums rumbled, the marching troops began to move slowly, and the streets of Chang'an were crowded with people who came to see them off.

They waved colorful flags in their hands and shouted slogans such as "Long live the emperor, long live the Tang Dynasty", their voices shaking the sky.

Li Shimin rode on his war horse and waved to the people, his face full of confidence and pride.

The team went farther and farther away, and finally disappeared on the distant horizon.

But the people in Chang'an City were still reluctant to leave. They looked into the distance, their hearts full of expectations and prayers.

They knew that this battle would determine the future of the Tang Dynasty and would also shape their own destiny.

Li Shimin's expedition caused a sensation on the people in Chang'an City, but it did not bring any disturbance to the lives of Li Haoze and the little princess.

They were still protected by the soldiers left behind in the Firearm Battalion, and they traveled between the Imperial Palace, Ziyun Valley, the Princess Huguo Mansion and Mingda Academy day after day.

While promoting the technological progress of the Tang Dynasty, they also enjoyed the privileges and conveniences brought to them by power.

Compared with before, the only difference is that Li Haoze visits Empress Changsun more frequently.

After all, Li Shimin was on a long expedition and Empress Changsun had no one to accompany her. Although the palace was prosperous, it inevitably seemed a little lonely.

Li Haoze knew the queen's loneliness very well, so he often visited her to bring her some laughter and warmth.

On this day, the heat was unbearable. The sun was burning the earth like a flame, and the gold and jade bricks in the palace reflected a dazzling light.

Empress Changsun sat in her magnificent bedroom, even though the palace maids were fanning her constantly.

But sweat still dripped from her jade-like forehead, and her pale face revealed the torment of the heat.

At this moment, Li Haoze walked in slowly with two maids, Tianxiang and Wu Shuner.

The two women carried a heavy wooden box together, looking mysterious and solemn.

"Mother, the weather is so scorching hot it's unbearable."

Li Haoze spoke softly and signaled Tianxiang and Wu Shuner to place the wooden box carefully in front of the queen.

"I developed this electric fan especially for you. I hope it can bring you some coolness in this hot summer."

"Electric fan?" Empress Changsun repeated the new name softly.

Her eyes were fixed on the heavy wooden box, with curiosity and anticipation flashing in her eyes.

As the wooden box slowly opened, a device with a unique shape and exquisite design appeared in everyone's sight.

The metal shell is polished to be as smooth as a mirror, reflecting an attractive luster.

The fan blades in the center are exquisitely crafted, like a work of art.

The perfect combination of simple materials and modern shapes shows a unique beauty.

Li Haoze smiled and gestured to Wu Shuner, who immediately understood and connected the power switch to the battery stored in the Lizheng Hall.

Then, Li Haoze gently pressed the switch next to him.

The electric fan immediately made a low and powerful buzzing sound, and the blades began to spin rapidly, bringing up a strong and cool breeze.

The wind instantly blew away the stuffiness in the bedroom, bringing a rare coolness.

Empress Changsun felt the sudden cool breeze, and the paleness on her face was gradually replaced by a blush.

The gauze dress on her body fluttered gently with the wind from the electric fan, as if she was a fairy descending to earth, adding a bit of graceful beauty.

The beads of sweat that had originally gathered on the queen's forehead disappeared without a trace under the breeze.

Empress Changsun stretched out her hand, feeling the breeze flowing through her fingertips, and an unprecedented sense of comfort and tranquility surged in her heart.

She slowly closed her eyes, feeling as if she was in a cool mountain wonderland.

Here, there are no worries, no heat, no worldly noise and disturbance, only pure air and cool wind echoing in your ears.

"My dear little sir, your electric fan is truly amazing!" Empress Changsun opened her eyes and exclaimed sincerely.

Her voice was full of joy and gratitude, as if this breeze not only blew away the heat on her body, but also blew away the loneliness and longing in her heart.

As she spoke, Empress Changsun couldn't help but hug the "little princess" in front of her tightly in her arms.

Although the "little princess" has grown to more than one meter tall, she can no longer snuggle in her arms and act cute like she did when she was a child.

But Empress Changsun could still feel the deep friendship between the two.

She placed a passionate kiss on the "little princess's" delicate cheek, as if expressing her endless love and gratitude.

"Mother~!" The "little princess" responded sweetly, her bright big eyes sparkling with dependence and closeness.

Li Haoze hugged Empress Changsun tightly back, as if he wanted to pass all his warmth and love to the person who had always loved him.

Since the death of his parents, Li Haoze has only felt deep maternal love from Empress Changsun.

Empress Changsun gently stroked the "little princess's" hair, her eyes filled with tenderness and nostalgia. "Little Princess, I never thought you'd grown up so quickly."

"Do you still remember when you were little? You were the one who clung to your mother the most, always wanting her to kiss you, hug you, and hold you high..."

As Empress Changsun spoke, a warm smile appeared on her face, as if she had returned to those good times.

Li Haoze also smiled, his heart filled with gratitude towards Empress Changsun.

"It was my mother who gave me the warmest embrace and the most beautiful memories." He said softly, with happiness shining in his eyes.

The "little princess" snuggled in Empress Changsun's arms, recalling every detail of the past, as if time had stopped at this moment.

It was not until the palace maid came to report that dinner was ready that Empress Changsun reluctantly put the "little princess" down.

"Little Rangjun, please stay and have dinner with your mother tonight," she said gently.

Li Haoze nodded and said, "Okay, I haven't had dinner with my mother for a long time. I must spend some time with her tonight."

At dinner time, the table was filled with sumptuous dishes.

Empress Changsun and Li Haoze sat together, enjoying this rare and beautiful moment.

The two of them enjoyed the food and chatted about family matters, creating a warm and harmonious atmosphere.

After the meal, Empress Changshun took the "little princess" for a walk in the imperial garden.

The Imperial Garden has a unique charm at night. The moonlight shines on the ripples on the lake, and the fragrance of flowers floats gently in the breeze.