I Defeated the Dragon at the Beginning, but I Started to Play with Technology

Traveling to Beast Girl Island, he defeated the giant dragon with one punch at the beginning, and Song Zhong was elected as the lord of Beast Girl Island. While horses were still used to transport goods outside, Song Zhong already had a 'train' in his territory. Song Zhong, who was armed with a rocket launcher, led the beast mother army, all armed with AK47, to capture the Holy See of Light. "Shameless guy, you are obviously so strong, but you are still practicing these evil ways." The Pope of Light roared. "This is the power of science!" Song Zhong said lightly. ... Hey, people think that I am invincible because I can tear apart dragons with my hands, but this is really just a misunderstanding. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.