Help! All of My Disciples of the Empress Want to Kill Their Master

I trained them one by one to become talents, just to use their strength to return to the top. But a thousand years later, when they ruled the world and returned to their hometown with honor... They all drew their swords. "Lin Yuan! You devil who plays with people's hearts! You must die!" Lin Yuan sat on the dean's throne, took a sip of tea and smiled lightly. "My good disciples, you are finally... Qualified to face your master." "So, let's start the second lesson now - what is despair."