Thanks Puka for detailed info.

I know secondary progression that's in
Huang Gu's book, but I didn't understand what the
hxll is primary progression.

Please explain more in your book~ and I'll await
to see it! ^-^

One more question.

How did you draw a Primary Chart if your software
doesn't have this function ?

Can you manually draw Primary Chart by setting
time zone and relocation longtitude and
latitude ?

tks.
(sorry can't type chinese now)