How does thermal circulation judge whether the weather in a place is sunny or rainy, and what is the relationship with air pressure?

Thermal circulation is the most basic form of atmospheric movement, which is mainly caused by uneven cold and heat on the ground. Remember, where the thermal circulation airflow rises, it will inevitably form rainy weather, and the corresponding ground will form low pressure; Where the airflow sinks vertically, fine weather will inevitably form, and the corresponding ground pressure will also form. Figure A above is the correct experimental effect.