The preludes of "Three Inches of Heaven" and "Tears Become a Poetry" do have certain similarities. This is mainly due to the fact that both songs use the erhu instrument, and the timbre and playing method of the erhu are similar in some aspects. Additionally, both songs feature similar melodies and rhythms in their intros, further reinforcing the sense of similarity. However, this does not mean that one of the songs plagiarizes the other, as similar melodies and timbres often appear in music creation. Overall, this similarity could be a coincidence or a common phenomenon in music creation.