Dear Don, I desiured you improve the way I conceptualized.
Last night , we talked about the Natural spin turn ( waltz ).
I said , according to the amount of turn mentioned in book , I found that although I facing DC on 6, I only turned 3/8 from 4-6.( Book said (pivoting action, 1/2 to right on 4, 3/8 between 5-6 .)Why we did not follow the instruction?
A teacher said :" you should not try to change the turn amount yourself ,just follow your partner .even he is wrong.Book said we should maintain good contact throughout the dancing, but some couples broke this rule remarkably in the competition, what you said?!"
My teacher came up and said: "shup up!I hate you talk about the turn amount . As a bigginer ,just dance with your feet not your mouth. Won't you think you can turn 180 degree exactly? What will you say if there is less or more after my measuring ? "
I answered :Of course turning less or over may happen, but it is a defect .Technique is essential in dancing , convince me of its outdate or other reasons.
(I thought , I may be a troublesome. but I believe correct concepts are significant guidance in practicing. Theory and practice are important equally.)

Another question: how to soften my upper limbs and shoulder ? ( I wish to find a way or more accessory muscles to ues less my deltoids which hold my shoulder up . My teacher height is 178cm , I am 157cm only.)
I think I like a crab or a board in front of my teacher. He becomes so frustrated to my stiff shoulder and head which tends to move rightward or chin downward . I am so upset also for my ugly frame. Give me your expert advice . Thanks.

ylchen,

You are priceless...just too cute, man.

I may not necessarily agree with the rigour with which you want to apply the prescribed technique though it's understandable based on where you are in your journey of discovery but you do ask such insightfull questions for a beginner lady and it's the asking that's important.

Just bear in mind that while technique is important, the prescribed, written technique is not the sum total of all technique you will encounter. Also, be aware of the limitations of language in describing dance. You will find technique in all kinds of places and even within yourself. Be open to many different ideas and experiment with them. For me technique is not a separate idea from feeling, personality, performance, partnering, musicality, etc, etc. You will find technique in all things when you focus your mind on them and ponder the detail. The whole is just as important as the parts and the parts need not necessarily add up to the whole in a mathematical or western scientic sense.

I don't mean to be sexist but generally I have not seen many beginner lady dancers take a view of dance in the way you do. You are going to be an amazing dancer someday soon.

Rha

Yichen
Rha has given you an excellent response on matters of technique.
On the point about tense shoulders and upper body - i have had this problem and have had to work hard (and am still working )to cure it. I'm a man, so can't give you exact guidance, but here goes -
1) You will become more relaxed as your technique and confidence improves, and i haven't been able to find a short cut
2) the most useful piece of advice i received was from my Physio (i've had injuries from dancing!!) who said i should try to separate my ribs from my hips - feel i'm actually trying to pull them apart. Doing this automatically gives me great posture (as a man) and as a bonus, i fund it hard to tense my shoulders at the same time - in fact, they stay down while i'm doing this.
3)Controlling your head should be easy. Let the man do the work and just flow with him. Maybe you're trying to do too much work. In any case, look UP UP UP all the time over your left shoulder. NEVER look at the floor. I tell my partner to check out the lighting systems!! You could do a lot worse. And you should practise smiling all the time during your practices, so that it becomes automatic. If you're concentrating on technique, you may have a 'concentrating' - type look on your face.
Don't worry about things too much - you're on a long journey and there are lots of stops and exciting places along the way

Dead right. Especially your bonus . I will drive to the studio and find out the feeling. So happy I am . All of you are my nice friends and teachers .