Sorry for the language sounding sinister. No, its just the standard legal statement. Nothing more, nothing less. If they didn't say it, they would be delisted.
From the perspective of having been a tech CFO, I can say that accounting systems are living things that evolve from start-up/vc, through private offering and then to public listing. At first they are shaped to sell to VC's, then for the PE interest, then for market entry and yet again for market regulators. In this process there will be legacy issues that have to be cleaned-up.
For a Chinese company it can be even more difficult because they are evolving from PRC-GAAP to US-GAAP rules. As a speculation, lets add yet another layer where you're bridging from a system where paying government officials something for their "work" is O.K. to one where that's clearly not OK. (A common issue for oil companies.)
For me its easy to see how a CFO can be backed into a corner and not know what to say to auditors in the middle of all of this. And if the CFO is tongue tied, the CEO and Board usually won't know what to do either, beyond firing the CFO.
That's where I think we're at. Studies of US companies show that an 11th hour call in the audit process has only about a 12% chance of being related to an operationally "core" issue. Of course, how much the market will blow-up a peripheral issue is an open question.
I'm waiting for info just like everyone else. Hope this helps.