The Secret of Hard Qigong in Babaomen was written by Mo Wendan.

The Secret Purpose of Mo Wendan Qigong.

The golden alarm of Shaolin's seventy-two martial arts

Yong Yang wrote Zhu Fitness for Health.

"Hunyuan One Qigong" is a golden alarm.

Qian Taining's Complete Collection of Taiji Internal Skill and Mind.

This is basically self-taught. Other books are unsafe, unpractical and prone to deviation.

No matter what book, you should be familiar with it, make clear its meaning, and then practice hard, and you will achieve a lot by the end of the year.

However, it takes several months of practice. I suggest you visit famous teachers and learn more advanced skills after you have achieved something.

Husband.