If it were any other singer or artist, unless they had prepared beforehand, the request Chen Feier made would certainly be putting someone on the spot, or even leaving them with no way out.
Writing a song is actually very easy. As long as one has learned the basic techniques, piecing things together can result in a track.
Yet writing a song is also extremely difficult. The birth of a good song requires not only a burst of inspiration, but even more so, ordinary accumulation and study, along with a little bit of luck.
Chapter 417