Finally got the report of my father's situation from the doctor today.
Middle age of lung cancer, with bad cell on left lung, and some infection to the right lung.
According to the doctor, my father's heart has a little bit problem too, so a cutting is not possible,
only method is radioactive treatment now, which actually not 100% effective to the situation,
most of the time, the treatment can only slow down the development of the cancer, so that
the patient will survive for some more years.
Anyway, we all accepted the fact and not as unhappy as we think.
Enjoy every moment.