Jiang Taigong regards fishing as a health preserving technique. He has been doing it for decades. Whenever he has time, he will hold a pole and watch the scenery in Tianshui. Fishing is actually a form, and his theory that you can fish with a straight hook without bait just illustrates his indifferent health-keeping concept of "fishing is false and fish appreciation is true". Just when people are trying their best to fish more and catch big fish, he looks at the fish around the hook and enjoys it. Traditional Chinese medicine believes that long-term bathing in the embrace of nature, the harmony between man and nature is conducive to the metabolism of the body, especially to improving the ecological function of the brain and central nervous system. Although there is no bait in fishing, you can watch the float when you throw the hook, and you can see a group of fish passing around the straight hook, and then you can lift the pole, lift the line and throw it. This makes the limbs, wrists and spine fully active and stretched, and plays a role in relaxing muscles and promoting blood circulation. Watching the fish concentrate and hold their breath when winding the hook, both of them are motionless, which is the unity of action balance. Jiang Taigong also honed his perseverance and patience in fishing, and developed the mind of seeking great things without seeking fame and fortune, thus gaining health and longevity with openness, tolerance and kindness.