How can I get a very straight line?

[daizhuo]

I tried many times, but not get a result close to what IIIyasviel had done.
I can't get straight lines.
Could someone to help?
Thank you so much!

@lllyasviel Could you explain how to get this result? This is very helpfull in architecture design field.

Original from IIIyasviel:
https://user-images.githubusercontent.com/19834515/238045940-9132700e-b2f9-4a33-a589-611ba234d325.png

After Use tiles from IIIyasviel:
https://user-images.githubusercontent.com/19834515/237365202-609acf87-1e51-4c03-85dc-37e486566158.png

I tried tiles in i2i, but get this urgly:
https://drive.google.com/file/d/16cbz0Tl38Hs8D5AOK22n-5dxDhWTUwEN/view?usp=sharing