Chinanews client March 12th (Xie Yiguan) On the 12th, the Japanese and Korean stock markets closed down across the board. The Nikkei 225 index once fell more than 5% during the session, and later recovered some "lost ground." As of the close, the Nikkei 225 index fell 4.41% to 18559.63 points, the lowest level since late April 2017; the Korea Composite Index fell 3.87% to 18343.33 points, the lowest level since the end of August 2015.