2016-2017 vs 2019-2020 (not finished, just rough idea)

1. NEED TESTED
2. I'm using this chart to learn about divergence especially about hidden bullish divergence (the purple line)

hint1: price channel up, RSI down
hint2: divergence trend line play an important role

note: I make the arrows as simple as possible, it's just rough idea, not for trade advice