This is exactly why I think this went down. China didn’t want something to get out to the global financial markets and were literally willing to take this action to make sure that didn’t happen. Just my guess but I’d bet that’s the case.

"Due diligence (DD) is an extensive process undertaken by an acquiring firm in order to thoroughly and completely assess the target company's business, assets, capabilities, and financial performance. There may be as many as 20 or more angles of due diligence analysis."

Basically from what I can ascertain, this was a consulting firm that did this type of work.