Badminton, table tennis, volleyball, tennis, basketball, handball,
and indoor five people soccer competitions and training venues,
multi-purpose venues all kinds of gym, dance room, school
classrooms, unit labor union activity room, multi-function hall,
travel playground, kindergarten, sports activities, shopping malls,
offices, hotels, hospitals by any of the ground (such as cement,
ceramic tile, marble, wood floors), as long as the flat are applicable.