The master of Xuanji Tower, Ah Jiu, is a recluse who rarely leaves the building. Unless someone threatens to blow up Xuanji Tower, she spends her days locked inside, forging swords and sharpening knives, never stepping outside.

Her daily routine consists of only two things: recalling what she did before and remembering what she decided to do.

Her memory is terrible, there's nothing she can do about it.

Meeting here was a surprise for Ah Jiu, and even more so for Tao Mian.