It is said that the protagonist lacks internal energy. What powerful internal energy is there in Gu Long's novel?

There were many powerful internal skills in Gu Long's novels. The following were some common ones: [1. Heartless Poison: It is a poison that can quickly cause a person's mind to collapse. It can completely destroy a person's heart.] 2. Yearning Ice: It is a type of ice that can freeze all substances. It can freeze the air, freeze time, and even freeze people's thoughts. 3. Peach Blossom Island Internal Strength: It is a very difficult internal strength to cultivate, but once it is successfully cultivated, one can obtain powerful internal strength and even surpass ordinary people. Condor Heroes Internal Strength: It is an internal strength that can increase a person's speed, strength, and agility. It is known as one of the most powerful internal strengths in Gu Long's novels. 5. The Song of the Blue Sea Tide: It is a song that can allow people to obtain extraordinary power. It was once cultivated by Li Xunhuan and Ye Kai as a secret weapon for the two to obtain powerful internal strength. These are just some of the common internal skills in ancient dragon novels. There are many other internal skills such as the Five Mountains Sanren internal skill, the Ghost Mountain Villa internal skill, and so on. Each internal skill has its own unique characteristics and cultivation methods.