YouTube - 動画概要欄 -
This is a longer, more detailed version of the video that goes step by step over an easy workflow for converting geometry resulting from a boolean operation, to all-quad topology that can be used in a subdivision workflow, using minimal manual retopology.
More tips & free sample e-book:
⇨ https://www.blendersecrets.org/
Shorter version:
⇨ https://youtu.be/vEOdZVBMSyQ