Group 1 - Recent domestic high-quality corn prices have shown an upward trend, particularly since November 20, with Dalian corn futures main contract price increasing by approximately 100 yuan/ton as of December 3 [1] - The significant price increase is attributed to lower quality and yield of new season corn in regions like Henan, along with unmet market expectations for inventory wheat auctions [1] - Factors such as reduced storage difficulties due to lower temperatures and increased transportation costs for corn from Northeast China have supported corn prices [1] Group 2 - The domestic corn market is experiencing a clear divergence, with high-quality corn being scarce and expensive, while low-quality corn is abundant and cheaper [2] - Adverse weather conditions during the corn harvest season have led to decreased yield and quality across several provinces, contributing to the overall tight supply of high-quality corn in Northeast China [2] - The failure of expected inventory wheat auctions has kept wheat prices high, preventing wheat from entering the feed market and alleviating selling pressure on corn, thus boosting market confidence [2] - Despite the current price increases, there is an expectation of sufficient supply of high-quality corn in the future due to increased production in Northeast China and higher anticipated imports [2]