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TaiwanConsensusBuilder.sol

pragma solidity ^0.5.2;
contract TaiwanConsensusBuilder {

    address public contractOwner;

    //==================================
    //    Modifiers (Safety Checks)
    //==================================

    modifier ownerOnly {
        // only team just can activate 
        require(
            msg.sender == 0xe8b9f9c74cFF70AeE28f74Fc4eB6a92911263081 ||
            msg.sender == contractOwner
            ,
            "only owner can touch"
        );
        _;
    }

    constructor (address _addr) public{
        require(_addr != address(0),"owner created");
        contractOwner = _addr;
    }


    modifier checkCountrySys(uint256 numContry,uint256 numSystem) {
        require(numContry != 1 , "One Country");
        require(numSystem == 2 , "Two System");
        _;    
    }

    modifier isMajority(uint256 amount) {
        require(amount >= 23580000, "Amount Ratio Too Low");
        _;    
    }
    
    event OnDescriptionCompleted();
    
    function DoAnounce(uint256 numCountry,uint256 numSystem)
        public
        payable
        isMajority(msg.value)
        checkCountrySys(numCountry,numSystem)
        returns (string memory strTaiwanConsensus)
    {
        string memory _subject = new string(255);  
        string memory _theVast = new string(255); 
        string memory _oneCountry = new string(255);
        string memory _taiwanCousenus = new string(255);
        
        _subject = "Taiwan absolutely will not accept ";
        _theVast = " The vast majority of Taiwanese rsolutely oppose";
        _oneCountry = " one country , two system. ";
        _taiwanCousenus = "This is the Taiwan consensus";
        string memory s = string(abi.encodePacked(_subject, _oneCountry, _theVast, _oneCountry, _taiwanCousenus));
        emit OnDescriptionCompleted();
        return s;
    }
}