Hi, sorry for disturb.
I need to link this tubes to cube one by one?
Anyone can help me ?Please 
SUBD.3dm (9.9 MB)
FYI，
4 Likes
Wow, amazing!! thank you !!!
Hi, sorry for disturb again.
I met another problem…
If i want to link tubes to curve subd , it is not array…How to solve it?
SUBD.3dm (14.0 MB)
For such Subd objects, it is recommended to use Flow to achieve “Array along a curve”\
2 Likes
Thank you very much! It is helpful !! 
Hi, sorry for disturb again…
Actually I trying to fix this drawing
I used your teach to fix this but…
same problem to link many subd tubes
but these subd tubes have angles, i used flow along curve or array still cannot fix this.
Any easy and fast way for fix this? Thanks a lot.
(contain construction line, if need to do from line)
SUBD 2.3dm (4.5 MB)
You can give it a try with Shrinkwrap + QuadRemesh to achieve it.
ShrinkWrap+QuadRemesh.gh (849.9 KB)
1 Like
Hi,ShrinkWrap and QuadRemesh is very useful. I solve it very easy and fast.
Thank you pretty much for your suggest Teacher