This year the price of bitcoin has dropped for a long time, and don't know how long bitcoin will be like this. I think this is a year of challenge from bitcoin, those who are strong will stay here and the weak will leave, this will be an option to determine the future.
I think the volume of bitcoin is the lowering of the previous month's price.
because everyone who has held bitcoin last month will sell them to low prices even though they know bitcoin dropping down. Another bitcoin challenge this year is the size of the seller at a small price.