A senior official of China’s Baosteel Group, the parent of Baoshan Iron & Steel , is being investigated for “serious disciplinary violations”, China’s corruption watchdog said on Tuesday. The graft watchdog, the Central Commission for Discipline Inspection (CCDI), named the official as Vice President Cui Jian but gave no further details in a short statement. “Serious disciplinary violations” is the term usually used to refer to corruption in China.