Sign in Tianguan for a Hundred Years and Kill the Demon King with One Sword

Xia Qian, who traveled to the Wilderness Continent, accidentally awakened the battlefield sign-in system. As long as you are on the battlefield, you can sign in and get rewards. So, without hesitation, he became an ordinary soldier stationed at the human border. Sign in at Tianguan and get the reward of Dragon Elephant Heaven Skill Sign in at the place where the wolf monster is killed and receive the reward of the Immortal Sword Skill "Sign in at Wild Wolf Forest and get the reward of True Dragon Creation Pill" The soldiers stationed in the iron-clad Tianguan and the flowing water have rotated, died in battle, and withered from generation to generation. Xia Qian has always stayed at Tianguan and never left. A hundred years later, the demon king led a large number of little demons to invade the territory. The beacon fire at Tianguan was high, the male pass was shattered, and countless soldiers were defeated, but he still refused to leave. What is there to fear about the demon king? Kill him with one sword. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.