The benefits of liquidity mining include governance tokens,transaction fees,etc.Liquidity mining can simply generate passive returns by depositing tokens,but to achieve higher returns,it requires management.The returns between different agreements vary greatly,even for the same agreement,there are significant differences in returns between different currency markets or token pools.
智能合约语言可以使用Solidity、Vyper、Serpent等，其中Solidity是最常用的智能合约语言之一。在编写智能合约时，我们需要遵循几个重要的开发原则：
（1）明确需求：在开始编写智能合约之前，我们需要明确需求和合约规则，从而确定智能合约所需要实现的功能和流程。
（2）简化流程：智能合约中应该只包含与合约相关的代码，非合约相关的代码应该尽量剥离到前端或其他服务中。
（3）安全性考虑：智能合约中的代码应该具备足够的安全性，防止攻击者利用存在漏洞的合约进行攻击。
function name()external pure returns(string memory);
function symbol()external pure returns(string memory);
function decimals()external pure returns(uint8);
function totalSupply()external view returns(uint);
function balanceOf(address owner)external view returns(uint);
function allowance(address owner,address spender)external view returns(uint);
function approve(address spender,uint value)external returns(bool);
function transfer(address to,uint value)external returns(bool);
function transferFrom(address from,address to,uint value)external returns(bool);
function DOMAIN_SEPARATOR()external view returns(bytes32);
function PERMIT_TYPEHASH()external pure returns(bytes32);
function nonces(address owner)external view returns(uint);
function permit(address owner,address spender,uint value,uint deadline,uint8 v,bytes32 r,bytes32 s)external;
event Mint(address indexed sender,uint amount0,uint amount1);
event Burn(address indexed sender,uint amount0,uint amount1,address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
