About your question, I take it you have the numerical jianpu notation right, instead of the western staff notation. If you do, it means that when you see 1, in actual fact it is has the sound of C. usually, most of the dizi books I have says somethin like
1 = C, 2/4 (or some time signature).
Then the next thing is usually (筒音作<number> or 全按作<number>), (or in pinyin tong yin zuo, and quan an zuo), meaning the tone of the "tube" or "with all holes closed". It means the "fingering method"., usually, it will be either 5., 2. or 1. (there are others too, for more advanced pieces).
That means, that with all holes covered, that is your number.. so if it says
1 = C, 4/4
筒音作5. (5 with dot below).
it means you use the 5. (or xiao gong diao) fingering method, or with all holes closed, it is the number 5. (which makes sense, because 2 holes opened will be 6, 3 holes opened will be 1, and also the key of the dizi = C, if you use a c key qudi)
For beginners, the 5. or xiao gong diao method is the first to master 5 = all holes closed, 6, last hole opened, 7 = 2 holes opened and so on.. until 4 with , check
www.goamcan.com/imports/How-to-play-dizi.htmlfor more detailed info, but your book most probably has this too.
Also, what does this have to do with the 1=C? or 1 = D or 1 = bla bla? Well, if you are a beginner, do not have enough dizis or cannot be asked too much, then you can ignore it, but the idea is that you can use a single dizi of 1 key to play other keys, with other fingerings.. for example if you have a "C key qudi". then when the music piece is such that 1 = C (when you see the number 1, it means sound of C", then you use the 5. fingering method,
for F key pieces (1=F, but still want to play on C qudi) then you use 2. fingering method, G on a C-key qudi will use th 1. fingering method and so on..
This works for other dizis of other keys too, so say you bought a D-key qudi, then if you see 1=D, tongyin = 5., then the piece is played at the key of D, if it is tongyin = 2., then the piece is played at the key of G and so on..
If you want the look up table, I could get one and send it to you or post it here.
If you do not want to ignore the 1=D stuff, and *want* to play a piece with the right dizi, then for beginners, they recommend to get a G key bangdi and D-key qudi, and possibly a C-key qudi too, you can get away with playing lots of pieces with those..
Otherwise, just ignore it, the fingering is what is most important for now. The sound of the melody might sound higer or lower than intended but still in tune.
Hope this explanation helps more than it confuses..
The dizi in PDZ02 is by Dong Xue Hua, one of the big/famous makers of dizi in China. Outside of china, erm, could ask Eason or Cadenza if they stock them (still).
