Group 1 - The stock price of Mingyue Optical reported at 48.42 yuan on August 21, down 1.36% from the previous trading day [1] - The stock experienced a rapid rebound, with a price increase of over 2% within 5 minutes at 9:38 AM, reaching a high of 49.86 yuan [1] - The trading volume for the day was 84,800 hands, with a total transaction amount of 417 million yuan [1] Group 2 - Mingyue Optical operates in the household light industry, focusing on the research, production, and sales of resin lenses [1] - The company's product range includes myopia lenses, presbyopia lenses, and progressive multifocal lenses, widely used in the eyewear manufacturing sector [1] Group 3 - On August 21, the net outflow of main funds was 943,200 yuan, while the cumulative net inflow over the past five trading days was 2,022,080 yuan [1] - The funding situation indicates a short-term inflow trend, but a net outflow on that specific day [1]