This is the case with Taoism, which advocates "governing by doing nothing". Just as people fall into the water, the stronger their desire to survive and the harder they struggle, the more likely they are to drown. When you stretch, you will find that people can float in the water. The best way to save yourself is to adapt to the environment and give up the struggle.
Zhang Zhishun's Vajrayana sounds like a secret of Wulin, but it's actually just a secret of keeping healthy and living longer. Just like Hua Tuo's Five Birds Show, King Kong plays a role in exercising. Zhang Zhishun keeps in touch with him every day. As for the effect, it depends on his daily life. Zhang Zhishun, an old man, rests, climbs mountains, works and cultivates the land every day. His physique is very strong. If Zhang Zhishun's body and mind are integrated, he doesn't crave worldly affairs and exercises every year, it will be difficult for him to live a long life.