Comments on “Comments on Solar Linear Force-Free Field and Application of FFT Analysis” *†

The paper “Comments on Solar Linear Force-free Field and Application of FFT Analysis”[19] made some comments on certain solar linear force-free field works and accordingly proposed an improved method of fast Fourier transform (FFT). Some viewpoints of this paper are worthy of reconsideration and it is necessary to clarify certain questions existing in it. We would also like to make some comments on its proposed method from the theoretical point of view.