The International School of Phnom Penh held a "fun rally" Sunday to help raise money to expand its elementary campus. Sixty-two teams participated in the treasure hunt, which required groups to race around the city in cars or tuk-tuks. "I created the idea so that the school could receive more popularity and develop better communication with people in the education sector," Cyndy Mah, the coordinator of the programme, said. The school needs at least US$10,000 for the planned renovations.