Chinese military writers look upon Sunzi as the father of their art. Not only is the Art of War China's oldest military strategy book, but it is also the oldest military strategy book in existence. Chen Taijiquan has an unbroken linage stretching back almost 400 years. Although today many people look exclusively towards the health and exercise benefits of the system, the true face of traditional Taijiquan is its unique method of developing martial skill. Taijiquan's combat theory shares the same heartbeat as the traditional military strategy ideas that have been handed down over the centuries. Many of Chen Taijiquan's methods can be traced directly to Sunzi's ancient book.