:D em cung co 1gop y thui chu ko bit co dc ko do la cach su dung dao luc cac bac xong len canh dung khoang canh nhan lech sang ben nhung van chia dao ve phia dich va chem hoac dam chac chac cac bac minh yen ma neu may chem trung dau( cai nay thi em thuong xuyen duoc):'>