What is a group of qigong exercises?
A combination of qigong exercises for a certain effect.
Qigong exercises have been combined for example for cancer patients. The same can be done for spinal diseases or when the sense of balance is disturbed.
There are also qigong exercises for certain target groups.
But it is not necessary to practise a certain group of qigong exercises, because you might catch this or that disease.
Basic qigong exercises are all that is needed.