Say goodbye to cumbersome physical delivery and embrace lighter Contracts for Difference (CFD) trading! This article deeply decrypts the core logic of "not holding physical objects, only trading price differences", and explains in detail how to use the low margin system and the two-way long-short mechanism to break the restrictions of the bull and bear markets and achieve free switching. At the same time, we look into the impact of hidden costs such as spreads, transaction commissions and overnight interest on the position cycle, helping you seamlessly allocate foreign exchange, stock indexes and commodities in one stop, and smooth systemic risks with diversified portfolios.