发电机概念板块下跌，智慧农业下跌6.44%

Group 1 - The generator concept sector experienced a decline of 1.57% on December 31 [1] - Smart agriculture saw a significant drop of 6.44% [1] - Weima Agricultural Machinery decreased by 3.78% [1] - Quan Chai Power fell by 2.67% [1] - Zhongjian Technology and Shenchi Electromechanical both dropped over 3% [1]