Hi, I am trying to use the precipitation feature, but the rain comes to the indoor area. But only several rooms, not all.
Please help, gonna submit the render in few days 
Hi @dian_xie
Sorry for the inconvenience. This behavior is currently expected and has already been reported as a known issue. Our team is aware of it and is actively working on improvements.
As a temporary workaround, you may place a plane above the affected area and then slightly adjust the rain or precipitation settings to trigger a recalculation. After that, you can hide the plane to achieve the effect of preventing rain from leaking into indoor spaces. Please ensure the plane is sized to cover the affected area.
Kindly note that when the camera moves beyond a certain distance or when the precipitation settings are adjusted again, the issue may reappear, and the workaround may need to be repeated.