Core Viewpoint - Dongyangguang Pharmaceutical (600673) has seen a significant stock price increase of over 4%, attributed to rising flu activity across multiple regions in China, leading to increased sales of flu medications like Oseltamivir and Baloxavir [1] Company Summary - Dongyangguang Pharmaceutical's stock rose by 4.65%, reaching HKD 44.12, with a trading volume of HKD 11.7372 million [1] - The company is recognized as the "King of Flu Medications," with its Oseltamivir (brand name: Kewai) holding a dominant market share in China, particularly in the pediatric segment [1] - Projected sales for the first half of 2025 are expected to reach CNY 1.301 billion [1] Industry Summary - Recent data indicates a notable increase in the sales of flu medications, with Oseltamivir's sales growth rate reaching 237% over the past week, and Baloxavir's sales increasing by 180% [1] - There has been a general uptick in sales for cold, fever-reducing, detoxifying, cough-relieving, and nasal spray medications [1]