(NOT MINE)
I found this really inspiring VFX reel on Youtube. At first I was disappointing over the usual lack of good resources for advanced realtime VFX stuff, but was surprised there's actually a free 3 hour video breakdown of how it was made in UE4. It's in Chinese but still really interesting to see his methods. It was really difficult to find for a non-Chinese (I had to ask a Chinese friend for help) so I thought I'd share this knowledge with other non-Chinese readers, LINK to instructions (needs a bit of WeChat know-how to access the tutorial):
UE4 VFX tutorial https://www.youtube.com/watch?v=PcTs-ssSlWo