You seem to be circling the issue. Corruption can mean anything from taking bribes to exerting influence that is outside Xi’s interests.
"Similarly, Xi’s siblings, nieces, and nephews held assets worth over $1 billion in business investments and real estate"
https://www.dni.gov/files/ODNI/documents/assessments/ODNI-Un...
Far too often when you see stories about how someone was persecuted for corruption it boils down to "he stole from rich people".