Thousands of Races Invaded, and I Became the Last Backbone of the Human Race

Thousands of races invaded, mankind fell into an unprecedented crisis, and ancient martial arts began to rise. In order to protect their common homeland, countless strong men shed their blood and sacrificed their lives to open up a battlefield for all races in the endless starry sky! The towering giant city rises from the ground amidst blood and fire to protect the future of the human race! As long as we are still there! The human race will not perish! Lin Yun traveled through time and was born into this glorious era. How could he live an ordinary life? He eventually became the last backbone of the human race! "Aliens are not allowed to step into our human race, and any offenders will be killed without mercy!"