Guard.insure is a peer-to-peer (P2P) price-shield insurance protocol launched on Binance Smart Chain (BSC) fistly with the form of helmet.insure and now multi-chained to support Polygon net with the aim to redefine option trading with user-friendly insurance policy wrapping. Guard allows users to create an insurance policy for any crypto asset in the market, protecting DeFi users against the risk of price fluctuations. Policy trading on Guard is market-oriented without complex mathematics. There are two kinds of policy which could be involved in mining: SHORT Tokens and LONG tokens.