What is the reason for the rebound of cryptocurrency?

On February 14, virtual currencies, which had experienced a sharp decline at the beginning of the year, rebounded across the board. The price of Bitcoin surged by 5.5% at one point, reaching $69,027. The price of Ethereum also rose by 7.5% at one point, reaching $2,059.2. According to CoinGlass data, in the past 24 hours, a total of 89,241 people worldwide were liquidated, with a total liquidation amount of $265 million. The surge in virtual currencies may be related to U.S. Treasury Secretary Yellen. Last Friday, Yellen stated that Congress has passed a bill to establish federal rules for digital assets and will submit it to President Trump for signature into law this spring. This statement instantly ignited the virtual currency market.