In the Classic of Mountains and Seas, the strength of mutated beasts couldn't be ignored. Some of the mutated beasts were considered very powerful, such as: 1. Giant Snake: As one of the famous mutated beasts in the Classic of Mountains and Seas, the giant snake is very powerful. They could breathe fire, have extremely strong attack and defense, and have extraordinary reaction speed and flexibility. 2. Mandrill: Mandrill is a mysterious mutated beast. It has sharp teeth and claws that can be used for attack and defense. The mandrill could also emit a mysterious sound wave that could destroy anything that stood in its way. 3. Wind Beast: Wind Beast is a kind of strange beast that can fly in the sky. They have super flying ability and can easily cross mountains and oceans. The wind beast's attack power was also very powerful, and it could easily destroy anything that blocked its path. 4. Thunder Beast: Thunder Beast is a kind of mutated beast that can produce powerful thunder. Their attack and defense are also very strong. The Thunder Beast could also summon lightning that could cause huge damage. It was important to note that the strength of mutated beasts was not constant. They would also change due to different factors. For example, some mutated beasts might become stronger after being attacked or become more powerful after obtaining certain treasures. Therefore, when reading the Classic of Mountains and Seas, we need to fully understand the mutated beasts recorded in it in order to better appreciate their powerful strength.