Zhao Yi: "Well, remember to help me fix the door after you take what you need."
Zhao Wuyang's copper coin sword is still with Zhao Yi, and he hasn't returned it. He's already decided to use the Zhao Family Treasure Vault to exchange for this sword.
The meaning of that sentence is that after Li Zhiyuan enters the vault to gather what he needs, he'll conveniently upgrade the Zhao Family Treasure Vault's array and restrictions, essentially inviting a thief to act as a security consultant.
Li Zhiyuan: "Is that appropriate?"
Zhao Yi: "You're the expert."
Li Zhiyuan: "We'll see how many good things are inside."
Zhao Yi: "You won't be disappointed. From the assorted cultivation techniques in our family, you can tell that our ancestors have been like packrats, collecting from everywhere to enrich our foundation."
Li Zhiyuan: "That's a filial analogy."
