Chapter 548: The return date is approaching, the border is in an emergency!

Penglai Immortal Mountain is very large, with many strange flowers and fruits growing on it, and the vegetation is extremely lush.

Even with the help of Zi Nu, the Great and Little Shao Si Ming, Xiao Yi, and some Yin-Yang School disciples, relying on Duanmu Rong and others, it is a difficult task to identify the properties of many plants in a short time.

After Su Xuan gave this task to Zi Nu and others, he also realized this.

Consequently, he could only take action himself.

Among the Seventy-Two Earthly Transformations, there is the art of medicine. Back then, Su Xuan relied on this art, combined with the art of ingestion, to refine I don't know how many medicinal materials. It can be said that he initially relied on medicinal materials to quickly improve his strength.

Of course, in this process, one has to mention the importance of a financier.

Relying on himself alone, although he could collect many medicinal materials, how could that be as fast as relying on a dynasty? Initially, the King of Han provided him with a large batch of medicinal materials.

Later, after the King of Han died, he killed Ji Ji Wuye and mastered the Night, and with the help of the power of the Night, he also harvested many medicinal materials.

And the true peak period of his strength improvement was when Su Xuan came to the Qin State.

The Qin State was powerful, and many precious medicinal materials could be collected by the Qin Wang. Later, Qin destroyed the six states, and all the treasures in the treasuries of the six states belonged to the Qin State. Among them, the medicinal materials were all handed over to Su Xuan by Ying Zheng.

In the process of refining these medicinal materials, Su Xuan's understanding of the Way of Plants had reached an unprecedented realm.

It can be said that if he wanted to write a medical book, he could write a medical book more detailed than the "Compendium of Materia Medica" in an instant. If he chose to practice medicine, he would also be the top doctor in the world.

Under Su Xuan's order, everyone no longer continued to identify the medicinal properties of each plant one by one. Everyone went to collect plants and then sent them to Su Xuan.

Su Xuan looked at them one after another, and he soon gave his conclusion.

"Useful, useless～～!"

Simple and crude words, but they could let everyone understand whether the plants in front of them were weeds or medicinal herbs.

Duanmu Rong was still a bit skeptical at first whether Su Xuan was talking nonsense. How could one identify the medicinal properties of plants at a glance? However, after studying it a little, she found that what Su Xuan said was true.

This left her extremely shocked.

She could only attribute it to Su Xuan's powerful strength and his mastery of everything.

She even found a reason for herself, such as when Su Xuan was preaching in the Yin-Yang School, he had once talked about the Way of Plants. Since Su Xuan could preach to others, it was not difficult to understand that he could identify the medicinal properties of plants.

With Su Xuan's help, soon, everyone screened the plants on the island roughly. Among them, most of the useless plants were excluded, and the rest were some plants with medicinal properties.

These plants were all new varieties that had never existed in the Central Plains and were of great research value.

Duanmu Rong and the people of the Yin-Yang School carefully collected their seeds while trying to find ways to take the living plants back, and at the same time, they were also studying their medicinal properties.

This process was very long.

But everyone did not feel that this was a waste of time.

After all, climbing an immortal mountain is something that only happens once in a lifetime. They must cherish the time spent on the immortal mountain.

No one can say whether they will have the chance to climb the immortal mountain again in this life.

Not to mention anything else, just to come to Penglai this time, they spent a long time.

Time passed slowly. While Su Xuan and others were studying everything on the immortal mountain.

The Central Plains was also surging with wind and clouds.

After taking Regarding Baiyue in the south and dividing the land of Regarding Baiyue into four commanderies, the Qin State had skyrocketed from thirty-six commanderies to forty commanderies. However, after waking up from the excitement of conquering Regarding Baiyue, Ying Zheng had another worry.

This worry was that the Mirage had not returned for a long time.

From the time the Mirage went to sea until now, more than a year had passed.

In the past, it was not that Su Xuan had not been in seclusion for more than a year, but seclusion and going to sea were different.

In seclusion, Ying Zheng at least knew where Su Xuan was and knew whether the National Master was okay. Going to sea was different.

The sea is vast.

Even though the Mirage was a large ship built by combining the strengths of the Mohist and Gongshu families and could cross the ocean, the wind and clouds on the sea were unpredictable, and no one could say whether they would encounter an accident.

If an accident occurred at sea, with nothing but vastness in front and behind, and no land, whether Su Xuan would have an accident was unknown.

Therefore, Ying Zheng was a bit worried about Su Xuan.

If the National Master had an accident, who else could achieve great things with him?

Ying Zheng could only comfort himself in his heart.

He said to himself that the National Master's strength was unfathomable, and he probably wouldn't have an accident.

At the same time, Ying Zheng became more and more curious about the Seven Luminaries of the Azure Dragon.

What kind of secret was it that made the National Master go to sea for such a long time?

Time passed slowly.

Since Ying Zheng destroyed Regarding Baiyue and took all the land of Regarding Baiyue, another few months had passed.

In these few months, the court of the Qin State was exceptionally busy, all busy with how to incorporate the land of Regarding Baiyue into the rule of the Qin State, rather than letting it become an enclave.

Although the land of Regarding Baiyue was all vast forests, since it had been occupied, it had to be governed well. Otherwise, wouldn't the conquest of Regarding Baiyue be in vain?

After the matter of Regarding Baiyue was finally settled.

On this day, the northern border was in an emergency.

It was the Xiongnu in the land of Mobei who launched an attack on the border of the Qin State.

When the seven states were side by side in the past, the Xiongnu, Donghu, Dayuezhi, and other foreign tribes also often invaded the Central Plains. At that time, it was mostly the Zhao State and the Yan State that resisted these foreign tribes because they were close to the areas where these foreign tribes lived.

Since the Qin State unified the world, the foreign tribes outside the Great Wall seemed to fear the power of the Qin State and did not continue to invade the Central Plains.

Unexpectedly, today they actually took the initiative to invade the Central Plains.

When he learned that the Xiongnu had looted border cities, leaving no grass growing wherever they passed, and all the people of the Qin State had been slaughtered.

Ying Zheng was genuinely angry.

Originally, he conquered Regarding Baiyue because Su Xuan took the Mirage to sea, and he decided to expand the territory during this time. Unexpectedly, after the matter of Regarding Baiyue was over, the Xiongnu dared to invade the Central Plains.

Without a word, Ying Zheng immediately ordered Meng Tian to lead a large army to guard the border.

After Meng Tian was hurriedly transferred to the border by Ying Zheng, on this day, Ying Zheng thought of another person.

Consequently, he left the Xianyang Palace and came to a residence in Xianyang City.