I need to submit proof that my father in law who I'm trying to sponsor for a Super Visa is coming here only temporarily. There is a separate upload requirement and they suggest showing return flight tickets. For several reasons (He is in China) it is really not possible to get return flight tickets right now. . the application processing time is nearly half a year for China and who knows if the application will be approved or if China will allow him to leave at that time. Could I supply something else. . like showing previous exit and entry stamps from previous visits (on a regular visitor visa)??? Or showing his health insurance is only for 1 year? Anything but flight tickets!