The guest list includes family members in Peking at the time, as well as foreign diplomats who helped the British.
The source said dozens of fighter jets and helicopters were on the airfield at the time, and that a powerful explosion had led to a huge fire breaking out.
It seemed a good idea at the time.
Gunawan insists he is not guilty, explaining that the money was intended as a business loan for his son, who was 19 at the time.