ZOS Cross Chain Distributed Financial Network (DeFi) is an open financial system with decentralized lending, stable currency, and trading, a sustainable and profitable financial public chain that connects fiat and digital currencies, and constructs a distributed financial system through three pillars. The first pillar: ZosLending, through mortgage lending business, enables financial institutions worldwide to provide legal currency lending services, connecting legal currency and digital currency. The second pillar: ZUSD, which issues stable bond currency ZUSD through Bitcoin based excess collateral, achieving low interest lending, holding currency to generate interest, and reducing global lending rates. The third pillar: ZosEx, which allows for free trading of fiat and digital currencies through decentralized trading operations....