The internal organs in his body are constantly wriggling. Li Yundong can obviously feel that his bones and muscles are constantly swelling. This swelling feeling is not painful, but full of a sense of strength.

Li Yundong can detect that the breath in his body is flowing rapidly at this time. Part of the breath is vented from his pores to excrete the excess breath, while part of the breath drives the rapid flow of Li Yundong's blood.

This feeling makes Li Yundong feel more comfortable and energetic as he runs. His running speed is almost equal to that of ordinary people's 100 meter sprint!

This terrible speed only stunned some passers-by driving on the road and almost caused a car accident.

Li Yundong suddenly felt that this practice was not an extremely difficult journey. On the contrary, he enjoyed it and never tired!

Li Yundong didn't expect that he ran all the way all day and night. Even when he was thirsty, he just slowed down a little, took a bottle of water from the backpack behind him, drank a sip, and then didn't even put the bottle back. He continued to run with it in his hand.

Li Yundong's galloping appearance along the way attracted the attention of many drivers. Some of them deliberately slowed down and followed Li Yundong to see how long the teenager could run.

But some of them followed for more than ten minutes and found that the boy with a tightly wrapped baggage wrapped with a piece of cloth was a little slower when drinking a few salivas. At other times, the pace of his feet was as fast as flying, like a sprint, and there was no sign of slowing down at all.

After waiting for an hour, Li Yundong's speed was still so fast that all these drivers were stunned by Li Yundong and nearly had a car accident.

How can people run so fast for so long? Is this boy from the national track and field team?

Some kind-hearted drivers took advantage of Li Yundong's drinking water and shouted: "young man, do you need me to give you a ride?"

Li Yundong smiled, waved his hand, wiped the water stains on his mouth and continued to run.

Li Yundong's internal organs are getting stronger and stronger under the exercise of tiger and leopard thunder. The Qi of the five internal organs, which is already very powerful in his body, is also becoming stronger and stronger.

At this time, Li Yundong has completely understood why Ziyuan let him run all the way. It turns out that when he runs, his own blood gas will boil with excitement. When he deliberately controls the boiling breath in his body, he can play a process of constantly exercising his breath in his body.

Long distance running is a process of constantly tempering Li Yundong's internal organs and eight meridians. It's like building a dam in the upper reaches of the surging Yangtze River. At the beginning, no drop of water is allowed to go out, so the water accumulates more and more, and the water pressure is stronger and more terrible. But when the water pressure exceeds the level that the dam can bear, the dam starts to drain automatically, To prevent the dam from being washed out by the flood.