Issue

Chinese character can't show on the UI of provisioning in WinPE.

This is most easily done with the Deployment Image Servicing and Management tool, commonly known as DISM.

DISM is also the utility LANDESK Hardware Independent Imaging employs to install drivers during the HII step of Provisioning Templates and OSD Scripts

Here is the screenshot:

Resolution

1. Download the attachment , Extract the attachment to D drive
2. Extract all the files to D:\OSD folder, if this folder not exist, please create D:\OSD
3. if the client machine is booting with BIOS, Copy  \Program Files(x86)\LANDESK\ManagementSuite\landesk\vboot\boot.wim to D:\OSD folder
4. Download Windows ADK packages from here:
   http://download.microsoft.com/download/8/1/9/8197FEB9-FABE-48FD-A537-7D8709586715/adk/adksetup.exe
5. Install Windows ADK on windows 10 (Do not install ADK on windows 2012, it will fail, this is verified)
   
6. Copy below two files to D:\OSD folder
   
   C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\x86\WinPE_OCs\WinPE-FontSupport-ZH-CN.cab
   C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\x86\WinPE_OCs\lp.cab
7. Right click on CMD as administrator, run echo.bat
8. Copy the newly updated Boot.wim file from the mount folder to the \Program Files(x86)\LANDESK\ManagementSuite\landesk\vboot\ folder
9. Redeploy your PXE Rep.
10. PXE Boot your client and verify all the "??????" is showing Chinese character correctly now.

PS: If the client machine is booting with UEFI, please repeat above steps from step 6 to 9, and replace boot.wim with boot_x64.wim, copy below two files to D:\OSD folder

C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\amd64\WinPE_OCs\WinPE-FontSupport-ZH-CN.cab

C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\amd64\WinPE_OCs\lp.cab

About Windows PE versions used in Ivanti Endpoint Manager

You could  check your core server version, and find the corresponding winPE version from this article, then download corresponding ADK from Download and install the Windows ADK | Microsoft Docs . Different versions of ADK file has to be installed on corresponding level of windows OS.