  The solar corona is full of dynamic phenomena, e.g., solar flares, micro
flares in active regions, jets in coronal holes and in the polar regions, X-ray
bright points in quiet regions, etc. They are accompanied by interesting
physical processes, namely, magnetic reconnection, particle acceleration,
shocks, waves, flows, evaporation, heating, cooling, and so on. The
understandings of these phenomena and processes have been progressing
step-by-step with the evolution of the observation technology in EUV and X-rays
from the space. But, there are fundamental questions remain unanswered, or
haven't even addressed so far. Our scientific objective is to understand
underlying physics of dynamic phenomena in the solar corona, covering some of
the long-standing questions in solar physics such as particle acceleration in
flares and coronal heating. In order to achieve these science objectives, we
identify the imaging spectroscopy (the observations with spatial, temporal and
energy resolutions) in the soft X-ray range (from ~0.5 keV to ~10 keV) is a
powerful approach for the detection and analysis of energetic events.
