Finance is undergoing a massive revolution. Banks have dominated the world's economy for decades, offering key financial activities such as lending, saving, and transfer of money. But within the past couple of years, a new kid has been on the block—Decentralized Finance (DeFi). Based on blockchain technology, DeFi aims to deliver banking or intermediary-free financial services. This technology disrupts the traditional banking system, raising a universal question: Will DeFi revolutionize the financial world, or will the traditional banking system dominate?