https://blog.gongquiz.com/2021/03/31/pvp-pve%ec%9d%98-%eb%aa%a8%eb%93%a0%ea%b2%83-%ec%a7%88%eb%ac%b8-%ea%b0%80%eb%8a%a5-pvp%eb%a1%9c%ec%8a%a4%ed%8a%b8%ec%95%84%ed%81%ac%eb%a3%a8%ed%8e%98%ec%98%a8%ed%8f%ac%eb%86%80%ec%84%9c/