Technical analysis by A-Tekin about Symbol BTC on 9/15/2021

I think that Bitcoin will enter a long bull period in the medium term, I noticed something that I did not notice in the big table, the weekly btc is a clear descending triangle in the week, the price is now busy filling the triangle with its charm, but I think it is a harmonic formation that has not been formed in a weekly. The end coincides with the beginning of March.