* SSEC 0.0%, CSI300 0.0%
* Stock connect closed for holiday
* FTSE China A50 -0.4%
SHANGHAI, Dec 25 (Reuters) - China stocks were flat on Wednesday, as many overseas financial markets were closed for Christmas holiday.
** The CSI300 index was unchanged at 3,991.97 points at the end of the morning session, while the Shanghai Composite Index was flat at 2,982.12 points.
** U.S. President Donald Trump said on Tuesday he and Chinese President Xi Jinping will have a ceremony to sign the first phase of the U.S.-China trade deal agreed to this month.
** China will step up support for employment to cope with rising pressure on job security due to internal and external challenges, the cabinet said on Tuesday, as the world's second-largest economy slows.
** "At present, China's employment situation is generally stable, but risks and challenges at home and abroad are increasing and the pressure to stabilise employment is increasing," the State Council said in a statement.
** Hong Kong market is closed for holiday on Dec. 25-26 and will resume trading on Friday.
** Japan's Nikkei index was down 0.16%.
** The yuan was quoted at 6.9986 per U.S. dollar, 0.12% firmer than the previous close of 7.007.
* The largest percentage gainers in the main Shanghai Composite index were Sichuan Western Resources Holding Co Ltd , up 10.15%, followed by Wuxi Taiji Industry Ltd Corp , gaining 10.05% and Jiangsu Dingsheng New Material Joint-Stock Co Ltd, up by 10.01%.
** The largest percentage losses in the Shanghai index were Harbin Churin Group Jointstock Co Ltd, down 4.97%, followed by Henan Dayou Energy Co Ltd, losing 4.94% and Harbin Gong Da High-Tech Enterprise Development Co Ltd , down by 4.93%.
** As of 0339 GMT, China's A-shares were trading at a premium of 25.66% over the Hong Kong-listed H-shares. (Reporting by Luoyan Liu and Brenda Goh; Editing by Himani Sarkar)