Market Performance - The Shanghai and Shenzhen stock indices opened higher on September 15, with the Shanghai Composite Index experiencing a slight decline of approximately 0.39% before rebounding to close slightly up at 3879.28 points, a gain of 0.22% [1] - The Shenzhen Component Index closed at 13061.86 points, up 1.07%, while the ChiNext Index rose by 2.13% to 3084.68 points [1] - The total trading volume for the Shanghai market was about 646.1 billion yuan, while the Shenzhen market saw a trading volume of approximately 860.8 billion yuan [1] Sector Performance - Key sectors showing strong performance included automotive chips, semiconductors, EDA concepts, and electrical equipment, with electrical equipment and automotive sectors leading the gains [1] - Conversely, sectors such as communication equipment, real estate, and military information technology experienced notable declines [1] Economic Indicators - In August, the total retail sales of consumer goods reached 39,668 billion yuan, reflecting a year-on-year growth of 3.4%, with retail sales excluding automobiles growing by 3.7% [3] - The industrial added value for large-scale industries in August increased by 5.2% year-on-year, with the manufacturing sector growing by 5.7% [4] - The service sector production index rose by 5.6% year-on-year, with significant growth in information transmission, software, and financial services [4] Industry Initiatives - The China Automobile Industry Association issued a proposal for payment norms between automotive manufacturers and suppliers, focusing on key aspects such as order confirmation, delivery, and payment settlement [5]