Chinese poles are vertical poles on which circus performers climb, slide down and hold poses. The poles are generally between 3 and 9 metres (10 and 30 ft) in height and approximately 2 to 3 inches (5 to 8 cm) in diameter. Some poles have a slightly larger pole that rotates around the static central pole using ball bearings. This rotating pole allows a performer to spin on the vertical axis, giving a performer the ability to incorporate rate of spin into what would otherwise be static moves. Bringing the body closer into the pole causes the performer to spin faster. A few Chinese pole tricks have been incorporated with pole dancing techniques.
The most famous trick is “the flag” where the artist hangs straight out from the pole with his or her hands. This requires a very strong upper body. A few people are able to do push ups in this position, and even fewer can rotate the legs around in a circle—this requires enormous core strength (source: Wikipedia).