In fact, for traditional martial arts, kung fu is both internal and external. The reason why it is called "inside and outside" comes from martial arts novelists. There are many people who think that the inner family focuses on practicing qi, while the outer family focuses on strengthening the body. In fact, anyone who knows traditional Wushu knows that Wushu pays attention to both internal and external cultivation, and no matter what martial arts school is, it can't be separated from the connotation of both internal and external cultivation. If a person only practices Qigong without actual combat hard work, it can only be said that he practices health and does not practice martial arts; If a person only practices external skills but not internal skills, it is also called "cutting life" from the perspective of traditional martial arts, which does not conform to the purpose of our traditional martial arts. China traditional Wushu emphasizes "combination of practice and practice, both internal and external". Take Tai Chi, which many people know, for example, it is soft when training. Actually, it's only superficial. Many famous Tai Chi masters in history practiced secretly. For example, Yang Luchan often practices hard work such as rubbing stone balls on the wall and shaking big bars. Another example is Bajiquan, what many people see is its fierce surface and abnormal bursting. In fact, there are also internal qi training parts, such as squatting piles, Yijinjing, soft gymnastics and so on. So there is no way to simply separate the family from the family. There is another point that people are easy to confuse, and it is also fictional from martial arts novels. For example, Shaolin school represents foreign boxing and Wutang school represents internal boxing. In fact, this is also wrong. Shaolin school's boxing is characterized by its strength, but it also has a spiritual part, that is, a quiet part. The characteristic of Wutangzong Boxing is that the latecomers take defense as attack, so there will be more internal skill training, but wudang boxing also contains many external skill skills. Therefore, for traditional martial arts, any school is both internal and external, which is one of the differences between China martial arts and foreign fighting techniques.