有上边空下边打一字谜

Lin Qingyan wiped the sweat from her forehead and said that her cheeks were flushed, and her black hair was scattered and wet on her skin. She had been to Wanfenling several times, but she had never fought so hard before. She has truly realized the feeling of being repelled and suppressed by Yin Qi, turbid Qi, and corpse Qi....