Time for our business. “What is DeFi?” I ask. 系时候進入正題了。 "DeFi係乜嘢？" 我問。 Choi bangs out his answer like a tweet: “Invest, trade, borrow and lend, all without trusting a single company.” 像發一條推特，Choi快速給出了他的回答："投資，交易，借貸和放貸，而所有這一切都不需要你去信賴某個個別公司。 " DeFi leverages key principles of blockchain such as programmability, immutability, interoperability, transparency and being open to all (the jargon is “permissionless”). DeFi利用了區塊鏈的關鍵原理，例如可編程性，不變性，互操作性，透明性以及對所有人開放（術語"無權限限制"）