I appreciate your generous guidance @sipci1989. Unfortunately, after I’ve tried following your detailed suggestions, I am still facing the same issues as before.
It looks like the mesh issue has been solved in Blender, however still persist upon importing into UE5. Alternatively, I am able to use Datasmith method to import 3d data created from 3D Max and import it into UE.
Importing from 3D data via Blender is just another method which I am trying to experiment with. Nonetheless, thank you so much for your tips! Definitely learnt a few tricks when dealing with surface issues when in Blender. Cheers!