public static void main(String[] args) {
        
        WangPo wangPo = new WangPo();
        
        // Ȼ˵Ҫ˽happyȻžͰ춪ӵǳϷ:
        wangPo.makeEyesWithMan(); // ûȻʱʵˬ˽
        wangPo.happyWithMan();
        
        JiaShi jiaShi = new JiaShi();
        WangPo wangpo = new WangPo(jiaShi);//ΪϵĴ
        
        wangpo.makeEyesWithMan();
        wangpo.happyWithMan();
    }