Since I don't know the exact story, if it's a traditional type of story, the main character would be the king. There might also be people who work in the car park or use the car park regularly, like car park attendants or drivers, who interact with the king.
In the 'king in the car park story', the obvious main character is the king. However, there could be other supporting characters. For example, if the king has some sort of attendant or advisor who has also ended up in the car park with him, they would be important characters too. And then there are the ordinary people in the car park, the shoppers or workers who might be the ones to first notice the king and whose reactions drive the story forward.
The main character is surely the king. But depending on how the story unfolds, there could be other significant characters. Maybe there's a young child in the car park who befriends the king and helps him understand this strange new world of cars and asphalt. Or there could be a villainous figure in the car park, perhaps a thief or a bully, who tries to take advantage of the king's confusion and vulnerability in this unfamiliar setting.
The best chapter pointer here is Chapter 2, "What Kind of In-laws Are They?". It opens with On the top floor of the Financial Building, a gathering of dark clouds... and closes on Jiang, Lin Manru, turned pale and quickly explained, "It's not eloping, my....
Chapter 45 is the strongest chapter-level answer because it starts from Helplessly, Jiang Yan had no choice but to step on the accelerator. and follows through on The guests have to go through so many troubles on the way, while these....
The best chapter pointer here is Chapter 37, "Those in the know anticipate the transformation, while the oblivious think it's a fashion show.". It opens with The barrage was suddenly filled with hahas, but the two guests present...
A practical answer is Chapter 55, because it turns the idea into a concrete scene. The chapter opens with Su Yinwan hadn't expected that, in just one day, Jiang Li's reputation had..., adds pressure through This person was even a top gaming streamer with tens of millions of fans,..., and ends on.
If you want the clearest chapter reference, go to Chapter 12. Early on, Qin?" Jiang Li called out twice, and only then did Mrs.; later, the chapter leans on Qin, who was standing by the dining table, respond..
A practical answer is Chapter 18, because it turns the idea into a concrete scene. The chapter opens with In the corner, a girl in a black dress sat quietly, holding a glass of..., adds pressure through I have no reason to joke with the rest of my life." "Moreover, I wouldn't..., and ends on Hurry.
The best chapter pointer here is Chapter 21, "Uncle Policeman, They Are the Ones Causing Trouble!". It opens with Jiang Li's clear and logical explanation had everyone stunned in place. and closes on But the implications could be different..
A practical answer is Chapter 65, because it turns the idea into a concrete scene. The chapter opens with Several minutes later, the room remained silent., adds pressure through But now this luxurious vibe was disrupted by the incongruous outfit into..., and ends on What's the deal with these.
Chapter 888, "You Are Not From This World", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Under the lead of the prison guard, Su Yinwan, for the first time in...
Chapter 933, "Gu Pansheng [Extra · Main Character Chapter]", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Even though Mom and Dad are often not at home, we have several aunts...