Demystifying Classical Chinese Dance – Zi Jin Guan One of the key essential techniques for female dancers to master is known in Chinese as ‘Zi Jin Guan.’ As you can see in this picture, the dancer swings her back leg upwards, and holds that posture while staying perfectly still. This technique is especially challenging—for a dancer to literally be able to touch her back leg with her head, she must have incredible flexibility, core strength and stability.