实时价格那就只能去查询链上合约的实时状态了，用来计算价格，使用 UniswapV2Library库(注意修改initcodehash为pancake的initcodehash)来计算价格,tokenIn是你要查询价格的Token，tokenOut是稳币USDX,amountIn传入1个单位的tokenIn，amountOut既是你要查询的tokenIn价格

(uint256 reserveIn, uint256 reserveOut) = UniswapV2Library.getReserves(
    factory,
    address(tokenIn),
    address(tokenOut)
);
uint256 amountOut = UniswapV2Library.getAmountOut(amountIn,reserveIn,reserveOut);

如果没有和稳币直接建立交易对，那就用getAmountsOut接口

function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts)