Can several toilet exhaust fans and restaurant box exhaust fans be connected in series with a main exhaust pipe? What should I pay attention to?

Watch the airflow. First of all, the exhaust fan in the bathroom should always be on, and the exhaust fan in the restaurant should be on occasionally. However, when the air temperature is high, it will flow faster. Therefore, it should be noted that the temperature of the dining room box is higher than that of the bathroom, and mixed airflow should be avoided as much as possible.