Which black swan event was the most painful?
Mentougou incident in February 2014: Bitcoin plummeted 80%
September 4, 2017: Market value evaporated 80%
March 12, 2020: Ethereum plummeted to $80
May 19, 2021: 600,000 contract dogs were liquidated
Luna black swan event in 2022: DFI field crisis
FTX explosion in 2022: market trust crisis #黑天鹅事件
