Thank you, Sam, and thanks everyone for making time to join our earnings conference call today. First off, we were pleased to deliver impressive second quarter results amidst shifting consumer trends and the rapidly evolving macro and the regulatory environment, highlighted by a 40% year-over-year increase in net revenues to RMB 880 million, and a non-GAAP operating profit of RMB 116 million. This strong performance underscores our effective strategic execution in our international expansion and outstanding ability to quickly adapt to change in regulation and consumer demand. With our matchless innovation and go-to-market capabilities. We are confident in our ability to lead this industry realignment and continue driving sustainable growth. Let's move on to an overview of the global smokeless alternative market and the latest e-vapor consumer behaviors and regulations relating to the e-vapor segment as well as our correspondingly strategic initiatives. The transition towards smokeless nicotine products continues to gain traction worldwide, while, e-vapor remains a key driver of the shift with solid momentum. Other categories such as heat-not-burn devices and modern oral nicotine products also contributing collectively reshaping the tobacco alternative landscape. Most consumers enter the small place market by moving away from traditional cigarettes rather than switching between smokeless products. Since each smokeless segment addresses distinct consumer needs. These 3 categories are more complementary than directly competitive, creating an ecosystem where multiple smokeless segments can thrive simultaneously. E-vapor products that are favored by those who value device performance, portability and often engage in outdoor activities. Heat-not-burn products appeal to long-time smokers seeking an [indiscernible] closer to conventional smoking. At the same time, modern oral nicotine fits seamless into the lifestyle of office workers and frequent travelers. Collectively, these categories are expected to capture a significantly larger share of the total nicotine market over the next 5 to 10 years. With oral nicotine currently standing as the fastest-growing segment. Against this backdrop, we are seeing a clear industry shift from single category to multi-category portfolio. Historically leading brands concentrated on a single product type. But today, diversification is becoming the potential standard among industry leaders. RLX has already established market leadership and high brand recognition in the e-vapor segment. Last year, we expanded beyond this core focus with the pilot program for modern oral nicotine products and have completed our 2B prototypes. Although the prototype has not yet officially launched in the 2C market, the feedback from distributors have been very positive, potentially broadening our portfolio to reduce risk and capture greater market share. We remain committed to lowering additional categories that align with both our capabilities and evolving consumer needs. With our strong execution track record, deep consumer insights and proven ability to innovate. We are well positioned to lead this transformative shift across the smokeless alternative industry. For our core e-vapor business, we have clear strategies and execution plans to address evolving global trends and local market dynamics. One of this year's global development is what we call the big puff effect where consumers are increasingly gravitating towards devices with a higher puff count per unit. This trend has driven substantial increases in product capabilities -- capacity, while also reducing the per millimeter cost of e- vapor consumption. We have responded quickly to this change by launching a range of high-capacity products tailored to local preference. At the same time, we are maintaining our focus on innovation beyond short-term trends, ensuring that we have pipeline products that deliver superior performance, greater sustainability and stronger consumer value for the long term. While the big puff effect has had an outsized influence in recent quarters, we expected the market to gradually stabilize towards the end of this year as physical constraints, such as handling comfort and possibility limited for the enlargement of devices. This stabilization will establish a new baseline from which the industry can resume healthy, sustainable growth in 2026 and beyond. And on disposable products due to environmental impact, another moment we are seeing in many major markets globally. While, disposable products have historically been an integral part of our portfolio, we recognize that the future lies in more sustainable solutions. This shift plays directly to one of RLX's core strength, cartridge-based technology. In both closed system and open system products. We are advancing cartridge-based technology by investing in new product development, optimizing e-liquid and cartridge integration to achieve superior performance, while providing greater value for consumers. By doubling down on our strength, we aim to lead the industry's transition towards sustainable solutions while capturing new market opportunities that emerge from this shift. On the operational front, we continue to refine and tailor our overseas regional operations for greater agility, enhancing our ability to adapt to local changes both effectively and efficiently. We have invested in local retail support, which provides us with first-hand retail and user insights into these markets. This empowered us to refine our go-to-market strategies and optimize our product portfolio for each market, while also helping our distributors make better day-to-day operational decision. In addition to operational improvements, we have been actively pursuing partnerships with new capable distributors and retailers in key regions to broaden our reach and secure access to critical growth markets worldwide. In March 2025, we entered into an investment agreement with a leading compliant European e-vapor company with the full suite of capabilities and services in the local market. This partnership brings us a wealth of new capabilities in Europe while also expanding our operational footprint and enhancing our local market share. In summary, the smokeless alternative market continues to evolve rapidly, driven by regulatory clarity, changing consumer preferences and technological innovation by implementing a multi-category strategy, strengthening our global distribution network and emphasizing sustainable product innovation, all while maintaining our deep commitment to compliance. We are positioning RLX to capture the opportunities of today while shaping the future of the industry. We remain committed to building a healthier and more sustainable world for our current customers and generations to come. Now let's move on to our financial results for the second quarter of 2025. Chao, please go ahead.