Hi, I am Chi-Cheng, a project researcher in the Institute 
for Solid State Physics (ISSP), The University of Tokyo.
My research interest is in condensed matter physics and 
materials science using first-principles methods based 
on density functional theory (DFT). I am working on adding 
more functions, especially in excitation calculations, into 
the OPENMX code, which is one of the most extensively 
used DFT packages.