Teachers, what are the methods of the first and second tones of saxophone? thank you

Thank you, this problem has been solved, so I'll talk about my understanding here for reference to new friends and people who just started to learn saxophone. The fixed tuning method is based on the actual sound above the score, and the fingering is saxophone tuning; The first key singing method is to play according to the mode of music, for example, C major: 1 is C, and D major: 2 is C. The C major and D major mentioned here are the modes of saxophone-specific spectrum, not the C major and D major of general tenor spectrum. Because saxophone is a transposed instrument, please distinguish and understand it at this point.