Looking for a novel where MC sticks with his sect for a reasonable amount of time. These aren't needed but would be a plus: MC was able to become strong enough in the sect that he would be able to take disciples and teach them. MC actively tries to strengthen his sect Thanks!
https://www.novelupdates.com/series/historys-strongest-senior-brother/ The entire novel is based around the MC getting stronger and improving his sect. Edit: Just like to clarify, since I didn't notice the "new world" part. Spoiler He does go to a higher realm and different worlds. So, for a little bit, they are separated. However, his time spent there his biggest objective is creating a safe place for his sect to expand and "move" up to the higher realm. Once there, they continue to impove.