Wash the water melon and cut the water melon in slices; remove the skin including all the green or light (hard) parts
Remove all the seeds and take the flesh to a clean bowl. Cut a 4 oz (110 g) of the melon flesh in small cubes, which will be used to place in the bowl for serving
Grate the rind of a lemon and the rind of an orange and add to the bowl with the water melon flesh
Squeeze the lemon and the orange juice and reserve the juices
Skin the cucumber, remove seeds if any and slice roughly and place together with the melon flesh in the bowl
Clean and de-seed an Asian chilli and cut in small rings
Mix the bowl containing the water melon pieces, the cucumber pieces the grated rinds of lemon and orange and the sliced Asian chilli, and add the cold vegetable broth
Add some salt and pepper and use the immersion blender to homogenize