Perhaps some new dark wizards or witches who have a vendetta against Harry. They could be more powerful or have some unique tracking abilities that make it difficult for Harry to stay hidden anywhere else but the power station. They might be after him because they think he has some sort of valuable magical item or knowledge.
It could be Death Eaters. They've always been after Harry in the original series, so in this fanfiction, they might be hot on his trail again, forcing him to seek refuge in the power station.
The best chapter pointer here is Chapter 170, "This Family Will Fall Apart Without Jiang Li". It opens with Watching the two who had long remained silent, the PD shifted his position... and closes on [Didn't the other guests also do farm work in the rain all morning, isn't....
A practical answer is Chapter 168, because it turns the idea into a concrete scene. The chapter opens with Su Yinwan spoke those words with a pitiable expression, then lowered her..., adds pressure through But this time, for lunch, Jiang Li cannot help, the rest of you must..., and ends on The Gu.
Look to Chapter 211 for the clearest answer. It begins with Advanced Repair was even more outrageous, costing a whole 30 points., keeps building through Not to mention the 50 points for Supreme Repair., and lands on A young master from the Beijing Circle has actually descended to the point....
If you want the clearest chapter reference, go to Chapter 187. Early on, During the competition, she passed by him numerous times, unfazed by...; later, the chapter leans on There was no visible trace of desperation on her face, yet her presence....
If you want the clearest chapter reference, go to Chapter 165. Early on, How come everyone else got a solid six points, and he ended up with just...; later, the chapter leans on Director Sun spread his hands, "Our staff calculated the total score with....
The best chapter pointer here is Chapter 172, "Shang Shaojing is Here Too?!". It opens with Not only Shu Yan, but the entire internet was shocked when they saw Su... and closes on Where's the chaotic scene I was anticipating?.
Chapter 137 is the strongest chapter-level answer because it starts from Jiang Li personally went to Lai Fu's tomb and performed a small ritual. and follows through on At that moment, Qi Tianyu had just finished his farming tasks, feeling....
Chapter 196 is the strongest chapter-level answer because it starts from Wen Jiaojiao was on the verge of a breakdown. and follows through on For example, Shu Yan drew the number 4." Director Sun tapped on the sign....
The best chapter pointer here is Chapter 189, "Do You Still Like the Gifts from the Program Team?". It opens with Seeing his painstakingly planted roses trashed like this, even as a fan of... and closes on Just after coming out of the bathroom, he saw the landlord's family all....