Sounds more like 6x Chinese astronauts are stranded, if the Nov 5 turnover was not complete when the return capsule wasa struck by debris.
Most, but not all, debris in space in near-earth orbit altitudes is debris from broken up Russian (Soviet Union) reactor cores and solidified liquid coolant from Soviet Union radar spy satellites. Many more pieces are from Chinese and Soviet Union anti-satellite test missiles, test impacts, and test explosions.
Read again, carefully. Each crew has its own spacecraft. The old crew's spacecraft got hit. The new crew's spacecraft is fine. That works out to 6 "Taikonauts" and 3 seats.
Dragon and Soyuz work the same way on ISS.