Everyone Changed Jobs, but I Chose to Use a Big Knife

[System] [Not Invincible] [Growth] All people changed jobs. Some people become Paladins, and some people become healers. And I changed my job to become a swordsman. I don't use the small knife, I prefer to use the big knife-Mo Dao. Is Mo Dao bulky? I have Qinggong to assist me. Mo Dao does low damage? Have you ever seen a knife that cuts out flames?