I Transmigrated to Douluo Dalu, and Tang San Became the Eternal Runner-Up?

Good news: I transmigrated into Douluo and got bound to an outrageously powerful golden finger! Bad news: my golden finger specializes in stealing the protagonist's cheat abilities!

This System is so overpowered that I don't have to work hard at all. As long as I "get along" with Tang San, whatever's his becomes mine.

Tang San: "Lin Feng, we're brothers!"

Me: "Exactly, bro. Mind if I borrow your Purple Demon Eyes?" (Thinking to myself: You'll lend them whether you want to or not.)

Result: His Purple Demon Eyes disappeared, and I gained the "Eye of Insight."

Everyone: "Lin Feng is amazing! What's wrong with Tang San?"

Tang San: "I still have the Tang Sect's Secret Arts!"

Me: "Perfect. I was just missing a set of hidden weapon techniques." (smiles)

Result: His Zhuge Repeating Crossbow stopped working, and a cold glint flashed at my fingertips.

Xiao Wu: "Lin Feng, you're so much stronger than Tang San!"

Tang San: "You can't steal my core cultivation technique!"

Me: "Oh? Are you sure? It's already 99% analyzed." (smirks)

Result: He collapsed, coughing up blood, his foundation shaken.

Master: "Tang San, you haven't been yourself lately."

Me: "Don't lose heart, Tang San. Let's spar again tomorrow! After all, we're brothers."