Quickly understand the global price game with zero foundation! This article deciphers the underlying operating essence of Contracts for Difference (CFD) by “dematerializing and only trading asset price differences” in a simple and easy-to-understand manner. It comprehensively dismantles how to end the "long-only" unilateral market restriction through the long-short two-way trading mechanism, and explains in detail the liquidity advantage of opening and closing positions anytime and anywhere within T+0 days, helping ordinary investors break physical restrictions, eliminate overnight anxiety, and greatly improve capital utilization.