fingertips are slightly stretched and this force leading the form.
the other parts of the body are not collapsed neither
Use the fingertip
see the whole form demonstration, keep the tension all the time
HeJingHan Yang style Taichiquan, teaching in Taipei.
See more videos at Youtube playlists
[中華武育學會] 推敲太極拳/八卦盤龍
Instructor: https://www.facebook.com/hejinghan