What happened to Chen's eyes in Ghost Blowing Lights?

In The Ghost Blows the Lamp, when Chen was young, he was the leader who moved mountains and poured seas. He had strong command ability and cooperated with the warlord Luo Laowai. Because he was born in an ancient tomb when he was a child, he had a pair of eyes that could see things clearly in the dark, and he was accepted as an apprentice by an old man, and he developed a skill, so he played an important role in the grave robbery industry. In the series of ghost blowing lanterns in Xiangxi in previous lives, Chen and partridge whistle had such cooperation, and then they reached an agreement to jointly explore this ancient tomb. As a result, both of them made a slip of the tongue for various reasons. At that time, the two men said a few words, but they accidentally swore an oath. It happened very strangely. Chen is blind, and the partridge whistle has lost an arm. When I first met Chen, he was already an old man, blind and living by fortune telling. Although he was kidnapped, he was unique. As a result, he was exposed to them. At that time, Chen also wanted to explore the king's tomb, but the poison in the periphery was too strong. Once inhaled, it would be poisoned and die, so they waited until after a heavy rain before running in. As a result, the rain stopped halfway, and Chen and his minions were in a dilemma. Chen Yiyi's technique of holding his breath escaped, but because his eyes were exposed, he needed to watch the road, so he was polluted. After being blind, Chen was disheartened. Seeing the falling of mountains and seas, she could do nothing but retire. However, his experience is extremely rich. Every time I meet him, I can get some useful knowledge from Chen, and he is also a supporting role that can't be ignored in the series of ghost blowing lights.