1 and 3 4and5 could be an option . but as there are min 3 people involved the variations are multiple depend on mood,situation , personality .
not all phantasies can be realized but reality could also create scenes you never thought about .
you are not . i agree . german /chinese couple here . unfortunately my wife is very conservative and yeah china is not the best place to inspire her for hotwifing . less or none opportunities and strong pressure from the society .