How to choose between 1-step and 2-step PCR?

How Everything Works on Instagram: "Jackie Chan built his legend on doing his own stunts. Throughout his career, he’s combined lightning-fast martial arts with daring, high-risk physical comedy — always refusing to rely on stunt doubles. From leaping between skyscrapers and sliding down poles wrapped in electric lights (*Police Story*), to clinging onto buses, helicopters, and even clock towers (*Project A*), Chan has repeatedly put his life on the line for the sake of authenticity. He’s broken

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