Hey @splendorhub I've been following for about six months so I think I can answer. @haejin is an Elliot wave master and augments his wave analysis with chart patterns, hence the triangles, cup & handles and bull flags like the one in this analysis. These are his two main tools, and he uses them in tandem which seems to help confirm a projected move up or down. It's all quite fascinating and amazingly accurate.
I hope this was helpful.