Domestic corn futures are greatly influenced by policy orientation and domestic demand, and are hardly affected by external market, so it is of little significance to open a night market. At present, the night trading varieties of Dalian Commodity Exchange are: soybean 1, soybean 2, soybean meal, soybean oil, palm oil, coke, coking coal and iron ore. The trading time is: 2 1:00-23:30. (If there is any change, please refer to the announcement of Dalian Commodity Exchange. )