Sweats tell about self-challenging. How much will you sweat with Liu Xiang on the 60 meters long and 180 square meters wide LED virtual runway? A famous anti-bacterial soap of P&G group, Safeguard, held a sports competition in Beijing Chanyang Sports Center. Participants could compete with Liu Xiang who was running 110 hurdles in the LED virtual runway. The faster they ran the higher marks they got. All running scores would be shown on the LED monitor instantly.