Japan's Nikkei Stock Average retreated after gains in previous two sessions as Yen appreciated and China reported a record high trade shortfall in February. Nikkei 225 index edged 0.4% or 39.88 points down to 9,889.86 with eight of ten industries posting losses. Nippon Paper Group led the drop among paper firms on a report which showed the wholesale prices of high-quality paper fell. Panasonic added 0.7% on news it plans to increase its sales of appliances by the end of March 2016.