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Yan Nie looked at her calmly, his voice carrying a hint of fatigue. "No need, Miss Gu." He could not help coughing violently again, his face as pale as paper. Ruan Su frowned at the young disciple patting his back. "How long has he been coughing?" The young disciple’s eyes were red with worry. "My master’s illness started when he was young. His lungs have never been good