BEIJING, Sept. 5 (Xinhua) -- A full dress rehearsal of the opening ceremony of the Beijing Paralympics was held at the Bird's Nest National Stadium on Thursday evening.

About 6,000 actors and actresses, some of whom are disabled, rehearsed the three-hour performance in the National Stadium amid tight security that was aimed to keep the details confidential.

No cameras, video phones or wireless devices were allowed to be brought into the evening show by spectators.

Zhang Jigang, director of the Paralympics opening ceremony, said earlier that the show would encompass three parts -- the travel of space, time and life.

The 13th Paralympics is scheduled to open at 8:00 p.m. Saturday in stadium. Around 4,000 athletes will compete in 20 events until Sept. 17.