I create a large ground, why does it appear like this in the scene

[_1147 (黄慧强1)]

[Nightwolf (Nightwolf483)]

In your Ground BP, presumably the ground what is the material being used

i suspect that says bad material or bad blueprint something like that but in your language, maybe make it smaller see what it says

If this isn’t true I’m not really sure what the camera is looking at

[_1147 (黄慧强1)]

BP_Floor is a very simple pure colour material, if the floor is small it shows up normally

[Nightwolf (Nightwolf483)]

Material is your problem then you’ll have to find a way to plug in a TextureCoordinate node
I’m not much an expert beyond that on materials
maybe this will help

WTF Is? Material - Texture Coordinate in Unreal Engine 4

[_1147 (黄慧强1)]

Thanks It’s worked