Li is a master of several styles of wushu, especially Changquan (Northern Longfist Style) and Fanziquan (Tumbling fist). He has also studied other arts including Baguazhang (Eight trigram palm), Taijiquan (Tai chi), Xingyiquan (Shape intent fist), Zuiquan (Drunken fist), Yingzhaoquan (Eagle claw fist) and Tanglangquan (Praying mantis fist). He did not learn Nanquan (Southern fist), because his training focused only in the Northern Shaolin Styles. He has also studied some of wushu's main weapons, such Sanjiegun (Three section staff), Gun (staff), Dao (Broadsword), Jian (Straight sword) and many more.[7]

It is Jet Li's authentic.

Li is a master of several styles of wushu, especially Changquan (Northern Longfist Style) and Fanziquan (Tumbling fist). He has also studied other arts including Baguazhang (Eight trigram palm), Taijiquan (Tai chi), Xingyiquan (Shape intent fist), Zuiquan (Drunken fist), Ying Zhao Quan (Eagle Claw Fist) and Tang lang quan (Praying mantis fist). He did not learn Nanquan (Southern fist), because his training focused only in the Northern Shaolin Styles. He has also studied some of wushu's main weapons, such as San jie gun (Three sectional staff), Gun (Staff), Dao (Broadsword), Jian (Straight sword)

Li is a master of several styles of wushu, especially Changquan (Northern Longfist Style) and Fanziquan (Tumbling fist). He has also studied other arts including Baguazhang (Eight trigram palm), Taijiquan (Tai chi), Xingyiquan (Shape intent fist), Zuiquan (Drunken fist), Ying Zhao Quan (Eagle Claw Fist) and Tang lang quan (Praying mantis fist). He did not learn Nanquan (Southern fist), because his training focused only in the Northern Shaolin Styles. He has also studied some of wushu's main weapons, such as San jie gun (Three sectional staff), Gun (Staff), Dao (Broadsword), Jian (Straight sword)

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No one knows!

I think he is more specilized in chang quan!