If we are too slow and get bogged down by the Yuwen tribe, all our previous plans will come to nothing!

At this point, Li Ru's expression became unusually solemn, making him look worried.

"Please rest assured, sir, I know what to say!"

Seeing Li Ru's state, He Lian understood the importance of the matter and quickly left.

Only after He Lian's figure disappeared outside the tent did Li Ru exhale, the solemn expression on his face vanished, and a strange smile appeared on his lips.

Soon, He Lian wrote a letter in urgent language and even stuck a few feathers on the envelope.

After finishing all this, He Lian said to his personal guards with a solemn expression:

"Immediately dispatch ten men, each with three horses for changing, and deliver this letter to the King within two days!"

"Here you go!"

The guard agreed, took the letter, and quickly ran outside.

Soon, the ten Xianbei cavalrymen quickly left the camp and headed towards Tanhan Mountain.

Three hundred miles east of Tanhan Mountain.

On the vast grassland, seven long ranks of cavalrymen were marching from west to east at a moderate pace.

Tan Shihuai rode on his warhorse at the very front of the central column, with Han Sui and several Han strategists following on either side of him.

"Wen Yue, several days have passed, why haven't we heard any news from those who infiltrated the Han Dynasty?"

Han Sui replied, "Your Majesty, there are still five days until the agreed time. They should be on their way back at this moment!"

Tan Shihuai nodded slightly, his gaze fixed on the direction of Yunzhong County.

Suddenly, a troop of cavalry appeared in Tan Shihuai's line of sight.