thang nao nghi no firee thi no firee chu thuc te tu truoc toi nay nhung loai sv pri nay lam j co thang nao no chiu free tat dau.kieu j no cung nghi ra cach tien chu hok nghi mang sv cho a chien vui dau,ma nhung loai sv kieu nay cung ton tai chang dc bao lau dau.