Where is the throttle line of motorcycle vacuum film carburetor? What is control?

The throttle line is connected to the top of the diagram, and there is a clip on the outside of the throttle line, and the throttle line is connected to a round hole on the throttle lever diagram. The throttle cable controls the throttle. When the throttle valve is opened, more mixture will enter the cylinder and the engine speed will be higher. When the throttle valve is opened, the mixture entering the cylinder will decrease and the engine speed will decrease.