Is the ticket collection and entrance of Jiuqu Yellow River First Bend together?

Yes, not far away.

There is a dedicated visitor center, a few hundred meters away from the entrance

The scenic spot is very large, you need to drive, the ticket collection is at the outermost, and the car can drive in

No, the ticket collection is on the edge of Tonk Town. It takes five or six kilometers to drive from the ticket gate to the scenic spot.

Not together, this one has to drive in. Buy a ticket at the gate, open a section and then go in to check the ticket.