Solar flares-explosions occurring on the solar corona emit intense radiation over a wide range of wavelengths, and often eject a tremendous amount of plasma into space. They sometimes produce serious effects on the environmental conditions of the Sun-Earth system, such as geomagnetic storms. Understanding their energy release mechanism is crucially important. I have advanced our understanding of the mechanism of energy release in solar flares and the traveling processes of flare-associated ejections in space by analyzing a number of observed data and successfully combining them. To achieve this, I analyzed the data without prejudice, and promoted constructive exchange with researchers in related fields.