1. The difficulty of bitcoin mining has been reduced by 5.63% to 83.15T, and it is expected to be lowered next time. 2. United Bank of America and Rothschild Corporation bought a spot bitcoin ETF worth about 20 million US dollars in Q1. 3. The trading volume of cryptocurrencies fell to 6.58 trillion US dollars in April, the first decline in seven months. 4. The European Union is considering adding cryptocurrencies to the investment market with a scale of 12 trillion euros, and its impact may far...