Hướng dẫn về hệ thống master skill trong game Mu kỷ niệm
Các bạn vui lòng tham khảo các link sau 
1. Class BK : https://gamemoira.info/huong-dan-choi-game/mu-online-pc/he-thong-master-skill/blade-master/
2. Class Suol : https://gamemoira.info/huong-dan-choi-game/mu-online-pc/he-thong-master-skill/grand-master/
3 . Class Eft : https://gamemoira.info/huong-dan-choi-game/mu-online-pc/he-thong-master-skill/high-elf/
4. Class  MG : https://gamemoira.info/huong-dan-choi-game/mu-online-pc/he-thong-master-skill/duel-master/
5. Class DL : https://gamemoira.info/huong-dan-choi-game/mu-online-pc/he-thong-master-skill/load-emperor/
6. Class Sum : https://gamemoira.info/huong-dan-choi-game/mu-online-pc/he-thong-master-skill/dimension-master/
7. Class RF : update