Reincarnated as a Black Dragon at the Beginning? I Surrender Myself to the State

Long Xingyu woke up and found that he had become a young dragon! In the past life, alien beasts invaded, the country was broken, and humanity was almost completely wiped out. Let me be reborn twenty days before the alien beasts invade. I must seize the opportunity! At the same time, the [Dragon Growth] system was awakened. Earn growth points to gain unlimited growth! In order to grow rapidly, Long Xingyu decided to cooperate with the country. "Feed me food. If alien beasts invade, I will kill them indiscriminately. Do you understand?" Twenty days later. Alien beasts invade. Long Xingyu said. Alien beast? It's boring when eaten raw, but delicious when grilled. Godzilla is here too? Then add a meal!