I'm looking for a Chinese novel taking place in an alternate ancient China. From what I can remember, the protagonist was a general in his previous life and died on the battlefield defending his country, losing all his surbordinates and comrades, before reincarnating back to his 18 year old self. I think his name was something with Wang or Mang. Due to his future knowledge he secures some kind of special metal that only he can forge into swords, sends a cousin on seafare adventure to find something, has a younger sister with immense strength that doesn't really like to practice, his master/mentor was dying before being saved by him, one of his new surbordinates is a female assassin, one of his older brothers is in "prison" because of his psychotic behavior..., etc. Does the novel ring a bell?