After Guarding the Border for Hundreds of Years, Why Are You Crying If I Quit?

The demon tribe invades, and the Kyushu human race is in danger. Lin Yu came through time and could not bear the suffering of the common people. He stepped forward and set up the Nine-Meander Yellow River Formation to guard the empire's borders for a hundred years! These hundred years. The demon clan's frontline cannot advance even an inch! Countless demon masters hated Lin Yu's formation. They hated Lin Yu to the core. But there was nothing he could do about Lin Yu. So, this lasted for hundreds of years. The people in Dayun are proud to live in peace. However, the hundred years of peace made them forget the cruelty of the demons and the bloody feud! The demons show a little bit of false kindness. They actually think that the demons are kind! Request to open the border and trade with the demons! Impeaching Lin Yu and seclusion is a sinner of the country! Lin Yu has been silently enduring these unwarranted slanders. However, I never thought about it. The empress of Dayun actually led the army to conquer the country in person! Relegate him to a rebel! Lin Yu felt extremely chilled and walked away. And those who are ecstatic about it don't know that. The moment Lin Yu left. Those "friendly" demons quietly revealed their bloody fangs!