Chefoo

The day after Pearl Harbour, Japanese troops marched into the Chefoo school and declared themselves in charge.

But as a precaution, the couple sent their four children - Kathleen, James, Mary and John - to a school for foreigners in Chefoo on China's eastern coast in Shandong.

The children stayed at Chefoo for a year, until the Japanese decided to turn it into a military base.

Life in the new camp was more difficult than in Chefoo.

Mary praised Chefoo School's teachers who turned problems into games.