According to online reports, European Central Bank Vice President Kindos said that the European Central Bank has learned lessons from its aggressive money-printing policy and will pay more attention to the side effects of loose monetary policy in the future. After curbing high inflation, the European Central Bank is re-examining its long-term portfolio of strategic and policy tools, including massive bond purchases and negative interest rates implemented over the past decade due to low inflation. Its 5 trillion euro (US$5.8 trillion) money-printing operation (known in the market as "quantitative easing/QE") has been criticized for fueling real estate and financial market bubbles and causing the European Central Bank to face huge losses after raising interest rates. Kindos pointed out that "all tools" used in the past will remain in the toolbox, but he and his colleagues have become more aware of the shortcomings of these tools. Another lesson, he added, is that "sometimes it's easier to start a tool than to exit." (Jin Shi)