One senior Chinese finance official who speaks fluent English and is a regular fixture on the international conference circuit told POLITICO by email that he could no longer attend an upcoming event outside China and was unable to speak on the phone.

He joins dozens of senior finance officials who have been removed in recent months, often after being accused of corruption.

Hollyshit. This is quite literally the same response you get from any affluent person who is under investigation, regardless of nation. In the US it's a trope at this point for people under active investigation when reached out to by media to respond that they cannot talk about it, especially over the phone and to journalists who are guaranteed to be keeping a record of the conversation. Media are filled with jackels and anyone with any sense of self preservation will refuse to talk with them, especially directly and not through legal counsel.

that he could no longer attend an upcoming event outside China

Yeah! No shit?! It's called being flagged as a "flight risk" due to having the financial means and connections to leave the country where you have been accused of commiting a serious crime. It's exactly the same in most countries, including the US. Hell, in the US they restrict your movement even within the national borders (can't leave specific state) until your name has either been cleared or you are convicted.