How to make a bootable windows 10 USB on a Mac

Inset the USB driver

Open the disk utility and format the USB driver

Download the windows 10 ISO file

https://www.microsoft.com/en-us/software-download/windows10ISO

Step-0: Double click the ISO file to mount the disk

Step-1: Copy all the files expect the folder sources from ISO mounted driver to USB driver

Step-2: Create a new folder sources in USB driver

Step-3: Copy all the files except the install.wim under sources folder of ISO mounted driver, into new folder sources in USB driver

Split the big file: install.wim

Brew install wimlib

felixy@USLC-FELIXY-M ~ % brew install wimlib
==> Downloading https://formulae.brew.sh/api/formula.jws.json
######################################################################################################################################################################################################################################################### 100.0%
==> Downloading https://formulae.brew.sh/api/cask.jws.json
######################################################################################################################################################################################################################################################### 100.0%
Warning: wimlib 1.14.3 is already installed and up-to-date.
To reinstall 1.14.3, run:
  brew reinstall wimlib

Split the big file: install.wim and output the splited files to sources folder of USB driver

felixy@USLC-FELIXY-M ~ % wimlib-imagex split /Volumes/CCCOMA_X64FRE_ZH-CN_DV9/sources/install.wim /Volumes/WINDOWS10/sources/install.swm 4000 
Splitting WIM: 4815 MiB of 4815 MiB (100%) written, part 2 of 2
Finished splitting "/Volumes/CCCOMA_X64FRE_ZH-CN_DV9/sources/install.wim"