My Golden Finger Is Only Used to Protect My Sister

I was once so poor that I couldn't afford to eat, and I was trampled into the mud by life. The only light is my sensible sister. Once the simulator comes, his life will only be to protect his sister. Give her the best life, Protect her purest dream, Keep her warmest smile. Whoever cuts off her way forward, I will cut off whose way back. Whoever destroys her hopes, I will destroy everything for him. The strongest golden finger in the world is not invincible. But as long as I am here, you will never be wronged.