This Mage's Body Is Too Strong

In his previous life, the Martial Saint failed to pass the level and was reincarnated into the magical world. He spent decades traveling around, collecting martial arts techniques from all over the world, and compiled the "Martial Arts Guide" to travel with him. "As we all know, although the mage has strong attack power, his body is weak. Even though he has various defense methods, we just need to observe carefully and wait patiently. As long as he shows a flaw, no matter how powerful the mage is, he is just a glass cannon! No matter how hard the turtle shell is, the meat inside is soft!" Liu Ling covered her face and sighed: "I finally got fooled..." [Magic city, imaginary world view, relaxed, daily life, single female protagonist]