System’s Super Sect

I reincarnated and became the young sect master of a sect that dominates a region.
I originally thought that with my solid backing, I will not have any worries in this life. However, sudden changes occurred and the sect declined.
When the last ten disciples were forced to leave, only a deaf old man and a dog named 'Haha' remained in the sect, I suddenly discovered that the buildings in the sect could be upgraded!
I'll upgrade the main hall!
I'll upgrade my residence!
I'll even upgrade my kitchen!
A super sect is currently rising inexorably like the Sun...
Welcome to my sect.
I only accept disciples that are geniuses. Even super experts have to pay if they want to join.
There's no free lunch in the world!