Harry Potter himself is often a main character. Since he has a connection to Gringotts already through his vault, it's natural for him to be involved in any inheritance - related stories. He might be the rightful heir to a previously unknown inheritance.
Hermione Granger could also be a central figure. Her intelligence and research skills would be invaluable in uncovering the secrets of a Gringotts inheritance. She might help Harry or another character figure out the complex magical and historical aspects of the inheritance.
There could be new original characters created specifically for the fanfic. For example, an old wizard who has been guarding the inheritance for centuries and now has to test the new heir. Or a young wizard from a minor family who discovers they have a claim to a major Gringotts inheritance and has to navigate the cut - throat wizarding politics to claim it.
A practical answer is Chapter 228, because it turns the idea into a concrete scene. The chapter opens with Huo Ziyang had not stepped out of the house for a whole week., adds pressure through She would never allow such scum in her family!, and ends on Why did you hit Ziyang?" Huo Xuan, one hand.
A practical answer is Chapter 247, because it turns the idea into a concrete scene. The chapter opens with Facts have proved that arch-enemies often understand each other the best., adds pressure through Madam, please receive your two thousand catties of red sweet potatoes."..., and ends on Why.
The best chapter pointer here is Chapter 249, "Maxing Out Wilderness Survival Skills!". It opens with Jiang Yan's body subconsciously shivered twice. and closes on He deserves it!] [It was absolutely the right decision for Jiang Li to....
Chapter 208 is the strongest chapter-level answer because it starts from Jiang Yan clicked his tongue, "What's this about money? and follows through on Seemingly sensing the raging fire in Su Yinwan's heart and feeling....
A practical answer is Chapter 242, because it turns the idea into a concrete scene. The chapter opens with Just when Jiang Yan called to heaven and earth in vain, he looked up and..., adds pressure through Young Master Jiang, it sounds like someone is at the door, aren't you..., and ends on Just.
A practical answer is Chapter 213, because it turns the idea into a concrete scene. The chapter opens with Jiang Cheng also noticed where Jiang Shixu's attention lay., adds pressure through Director Sun, please don't tell me the King for today is me again., and ends on As soon as they were seated.
A practical answer is Chapter 243, because it turns the idea into a concrete scene. The chapter opens with Hahaha, the young master's face has gone white, but I got a scare just now..., adds pressure through He was directing a normal variety show after all., and ends on Perhaps feeling that the.
A practical answer is Chapter 230, because it turns the idea into a concrete scene. The chapter opens with Shang Shaojing's expression wasn't looking too good either., adds pressure through Is this how you treat my daughter?!, and ends on If he knew that your stepmother was secretly prompting you.
A practical answer is Chapter 245, because it turns the idea into a concrete scene. The chapter opens with Jiang Yan became even more smug upon hearing this., adds pressure through Although Su Yinwan's background might not cut it, she's more than a good..., and ends on Although the setting was.
A practical answer is Chapter 211, because it turns the idea into a concrete scene. The chapter opens with Advanced Repair was even more outrageous, costing a whole 30 points., adds pressure through It's okay, I have enough points to redeem a Supreme Repair myself., and ends on A young master from.