As usual, it´s up to the authorities of the country where the accident took place to lead the investigation and publish a report. This NTSB press release clearly says all communication will be handled by the Chinese CAA:
Press Advisory
There have naturally been several accidents in China over the years but I could not find any mention of a crash report they´d ever published. The Chinese CAA´s website has a link to a supposedly English version but it´s "under construction". I wonder if the NTSB will publish something in English, like a preliminary report within the usual 30 days or so? Anybody ever seen a crash report by the Chinese authorities anywhere?