use an animtion: snap the glass with the liquid model to an area (something like "if glass is in area, enable fluid") an then simply run the animation that shows the fluid falling into the pot... for powder you could use sprites

I think there aren't any fluid physics in the video.

It looks more like a shader... but I'm not sure.

I agree. Looks for me like a shader and particle effects.

I'm got the excavator simulation project
whether the pro gamestudio A8 can simulate the dredging of sand?