Relationship between trend line and waves

How to know which trend line is good for trade?

• The narrower the trendline slope (under 20 degrees), the harder it is for the trend to change.
  
• A small adjustment (change) will be the source of a big correction (change).
  
• The conditions for a bull wave or bear wabve thrive are from 35 degrees
  

One more for calculat timming with candles in this chart:

Because Modify Hikkake was happened!
Before that is the bearish stick sandwick pattern. Suddenly there is a candle pass => create bearish modify hikkake
So we need to wait for the next 3 h4s to check the bottom of candle 2 at 51200usd to make sure we have a bottom at 50500 on this correction.

DO TRUNG QUAN.