In order to ensure the long-term peace and stability of Datang, improve national cohesion, and improve comprehensive national strength, Xia Xue also attaches great importance to the construction of Datang's soft power such as culture and literature and art. In addition to making flutes, erhu, guqin, pipa, drum kits, pianos, guitars, violins, accordions and other musical instruments, she also formed bands and wrote popular songs. In the later period, with the continuous improvement of the scientific and technological level of the angel company, it also produced products with higher scientific and technological content, such as: records, movies, etc., due to the strict secrecy of the core technology, the musical instruments, music records, movies, etc. bought by countries around the world are basically produced by the angel literary and artistic company, these cultural and artistic products have played an important role in promoting Datang culture and enhancing the influence of Datang, and of course it has also earned huge profits for the angel company.

Xia Xue attached great importance to the development of science and technology, put forward the advanced slogan that "science and technology are the primary productive forces, and if you are backward, you will be beaten", and raised the status and remuneration of scientific research personnel, engineers, skilled workers, doctors, teachers of science and technology schools, and so on, which made many conservative ministers stunned, because in the past, the employees in these industries were all low-status people who did not enter the stream.

Xia Xue put forward the requirements of "seeking truth and being pragmatic and doing real work" to the officials of the Tang Dynasty, and the so-called "truth-seeking" is to constantly understand the essence of things and grasp the laws of things. The so-called "pragmatism" means that we should do and practice under the guidance of this understanding of regularity. "Empty talk misleads the country, but hard work prospers the country", the ancients said: "Although the road is long, it will not be done; Although the matter is small, it is not impossible", "for the political nobles", Xia Xue knows that there are many empty talks and misleading lessons in history, so he asked Tang officials to talk less empty words and do more practical things.

She also suggested that Li Shimin strengthen patriotic education. For this reason, he has written many patriotic songs based on the relevant songs of later generations, such as: "I Love You, Datang", "Unity is Strength", etc., which have been widely circulated in the land of Datang and have made great contributions to enhancing the cohesion, national pride and patriotism of all ethnic groups in Datang.

Xia Xue also designed a unified national flag style for the Tang Dynasty: a golden "Tang" character on the sky-blue flag is concise and clear. And the "open and enterprising, self-improvement, unity and patriotism, truth-seeking and pragmatism" as the spirit of Datang forever inherited. Xia Xue believes that if the people of Datang can inherit the spirit of Datang from generation to generation, then Datang will always stand on top of the world.

The lyrics of "I Love You, Datang" are:

I love you Datang

Larks fly by from the blue sky

I love you Datang

I love you Datang

I love you Datang

I love your vigorous seedlings in spring

I love the golden fruits of your autumn

I love your green pine temperament

I love your red plum character

I love the sweet cane of your hometown

Like milk. Water moistens my heart

I love you Datang

I love you Datang

I'm going to dedicate the most beautiful song to you

My mother, my homeland

I love you Datang

I love you Datang

I love you for the blue waters of the South China Sea

I love your snowy northland

I love you and the forest is boundless

I love you Qunshanwu

I love your babbling river

A clear wave flowed through my dreams

I love you Datang

I love you Datang

I want to dedicate my beautiful youth to you

My mother, my homeland

The lyrics of "Unity is Strength" are:

Unity is strength

Unity is strength

This power is iron

This power is steel

Harder than iron and stronger than steel

Open fire on the enemy

Let all intruders die

Towards the sun and towards freedom

Towards the Tang Dynasty, it shines brightly

Unity is strength

Unity is strength

This power is iron

This power is steel

Harder than iron and stronger than steel

Open fire on the enemy

Let all intruders die

Towards the sun and towards freedom

towards Datang

Shine brightly

In 652 AD, in order to ensure the smooth flow of maritime trade and protect ships from piracy, Xia Xue sent the Tang Angel Navy to garrison 5 warships and 1,000 navies in the Strait of Malacca, which is located between the Malay Peninsula and Sumatra.

The northwest end of the Strait of Malacca connects to the Andaman Sea in the Indian Ocean, and the southeast end connects to the South Huaxia Sea. With a total length of about 1,080 kilometers, the maximum width of the northwest is 370 kilometers, and the narrowest point in the southeast is only 37 kilometers. The Strait of Malacca is also known as the "maritime lifeline" of Datang's maritime trade. The garrison site Xia Xue was named: New J Slope.

Later, at the invitation of SL Lanka, 5 warships and 1,000 navies were also sent to YSL to protect merchant ships at sea.

Angel companies are all over the world, and various countries to develop minerals, in the Middle East Persian Gulf region and local countries to extract oil, and buy oil, these countries do not know what oil is used for in addition to lighting and other ordinary functions, not to mention refining and processing, so, the price sold to angel companies is very low, angel companies are more and better, as long as you have it, I will buy. After buying, it is processed into high value-added products such as diesel, gasoline, lubricating oil, plastics, etc., and then sold to countries around the world at a high price.

Xia Xue purchased a large amount of crude oil and shipped it back to Datang Mainland, and built a large-scale oil reserve base in many parts of the country in the name of Angel Company, because Xia Xue knew that oil would become the "blood of industry" in a certain period of time in the future, and it would be indispensable for future industrial development. However, she knows that as an energy source, there will be more advanced technologies to slowly replace oil in the future, such as nuclear energy, etc., but as a natural energy source that promotes mankind to enter a more developed industrial age, oil will play an important role, and it is very valuable.

In February 649, the first automobile factory of the Angel Company was born, and the world's first diesel-engined car was built. The Angel car is no more than the slow bus produced fifteen years ago that can only run on the streets of Haijing City, it can not only run on any road, but also several times faster than the bus, and because of the good shock absorption device, it is not bumpy at all, and it is extremely comfortable. From then on, people no longer had to ride bumpy horses or ride bumpy and slow carriages when they went out. Especially those who often ride horses, know that if you bump on the back of a horse for a day, a layer of skin will wear out on the buttocks and the inside of the legs, and blood will seep out. The old wounds are not healed, and the new wounds come again, and those places are always bloody. The carriage ride was no better, and at the end of the day, the bones all over my body were torn apart, and I couldn't sleep all night in pain. Riding a horse, riding a carriage and riding a car is a punishment, and riding a car is really enjoyable. Therefore, once the Angel car was launched, the people who experienced it were full of praise, and orders from all over the world were continuously delivered to the door, and the demand has been in short supply.

In June 649, the first steam engine freight train of the Angel Company and the first railway from Chang'an to Haijing were repaired, and a large number of goods, grains, medicines, clothing, various products, etc. from the port of Haijing were continuously transported to Chang'an, the capital division of the Tang Dynasty, nourishing the Zhengzhi center of the Tang Dynasty.