Espionage: You Have Guns, I Have Martial Arts!

Lin Yuan transmigrates to the War of Resistance era. As it happens, Yan Shuangying is about to seize the Little Metropolis Dance Hall. Knowing the plot inside out, Lin Yuan decides to take out Yan Shuangying first, then make a name for himself. From the start, he awakens the Golden Bell Shield and Iron Shirt techniques. His enemies have guns, while he has a bulletproof Golden Bell Shield. They have cannons, while he has protective astral energy. Gradually, Lin Yuan becomes a monster impervious to fire and water, blades and bullets.