Arc 14War Reaches Shushan
As Great Sui and Great Yu went to war, Li Ping'an stayed at Shushan, developing medicines and poisons while friends left for the front. After the Emei Sect’s betrayal and the deaths of Shushan elders, the Soul-Seizing Demon Venerable attacked Shushan, and Li Ping'an prepared to defend the prison.
- At the Demon-Slaying Assembly, Li Ping'an watched the matches, reunited with friends, and was eventually sent back to Shushan after fighting with Zhengwu Sect members.
- As Great Sui marched against Great Yu, Li Ping'an returned to Heaven-Reaching Peak, cultivated medicines and poison, and learned that Liu Yun was leading the campaign.
- Shushan sent disciples north, including Liu Er Dog and later Yun Shu, while Li Ping'an was assigned to make medicines for the battlefield.
- Li Ping'an experimented with poisons, accidentally poisoned Liu Zongcheng with one of his pills, and used his improved poison to incapacitate four pursuers.
- After refusing Tang Zhen’s invitations, Li Ping'an took a post guarding Shushan’s Underground Prison and studied the Poison Scripture while developing poison formations.
- Two years passed as the war continued, and Li Ping'an joined a funeral for thirty-five dead before receiving news that Shushan was in danger.
- The Emei Sect ambushed Shushan’s reinforcements at Wolong Valley, killing six elders, then fled and was revealed to have sided with Great Yu.
- The Soul-Seizing Demon Venerable attacked Shushan’s Mountain-Guarding Grand Formation, and Li Ping'an readied Old Ox and Run Tu as the prison disciples rushed to battle.