Besides being lighter, Zhang Tie's vision was also improved as he could see distant items clearly. Additionally, he could further identify the fragrance of different flowers and grasses. Furthermore, he had a sharper auditory sense when he could even obscurely hear the boisterous sounds of villagers in the distant town at the foot of the mountain. When he focused on the small town, he could hear the boisterous sounds clearly; when he focused on the gurgling brook on the mountain, he found it was as clear and loud as a symphony; by contrast, the boisterous sounds in the small town faded out and became a background sound. What a marvelous feeling! When Zhang Tie gazed at the colorful clouds in Castle of Black Iron, he found the clouds slowed down while the whole world seemed to be agile and tranquil, which could be known by telepathy.