Song Changjiang cools off with water while keeping one of his palms on the designated spot on a car window, during an "endurance competition of car touching" in Chengdu city, Southwest China's Sichuan province, May 30, 2012. The competition is part of a promotion for a real estate sales program. The contest attracted more than 120 participants, who are required to keep their hand on a car, and whoever can last the longest time will win the use of a car for five years. By 10:20 pm, the competition had been going on for three days and nights, leaving only three people still standing.[Photo/CFP]

Medical staff workers conduct a blood pressure test for one of the last three remaining in an "endurance competition of car touching" in Chengdu city, Southwest China's Sichuan province, May 30, 2012. [Photo/CFP]