BTC constitutes a W bottom from 3122-13880-3850, and 3122-3850 can form a FIB time period, It just reached the 1.886 callback time node in May, and reached the theoretical height formed by the bottom of W in April (13880-3122)/3122*13880+13880+3122=64830 Looking forward to the next time point 2.1-2.14, July 22-August 9, 2021, a new starting point