The End of the World! Panda Blood

If your blood is panda blood! In modern times you may be remembered! At least they will have scruples! What if in the end of the world, you discover that your blood is a top-notch material! [Doomsday~No system~No immortality~Fortress~Survival rationally] The first destruction of the world! 4600 Years! The sky is shattered! The second destruction of the world! 2300 Years! Flooding! This time it's poisonous fog! Is this the third annihilation? 2050! The plaster country discharges nuclear sewage for the 30th year! Finally caused a natural disaster! Nuclear pollution, heavy rain, and overwhelming fog! I can't see my fingers! Humans, animals, and plants are infected one after another!