英伟达股价急跌，中概股、黄金拉升，人民币创9个多月新高

Group 1: Market Performance - The Nasdaq China Golden Dragon Index rose approximately 0.2%, with notable gains from companies like iQIYI, Tiger Brokers, and Century Internet, which reported strong earnings growth [2] - The Nasdaq China Golden Dragon Index has increased over 15% year-to-date, indicating a strong recovery trend, despite recent volatility [4] Group 2: Company Earnings - Tiger Brokers reported a 58.7% year-on-year revenue growth in Q2, marking a historical high [2] - Century Internet achieved a 22.1% year-on-year revenue growth in Q2 [2] Group 3: Currency and Economic Indicators - The Chinese Yuan reached a new high against the US dollar, closing at 7.1385, an increase of 237 basis points from the previous trading day [5] - The offshore Yuan also strengthened, breaking key levels and reaching 7.1250, the highest since November 7 of the previous year [7] Group 4: AI Industry Concerns - Nvidia's second-quarter revenue and profit exceeded market expectations, but its data center business reported two consecutive quarters of revenue below expectations, raising concerns about the sustainability of AI investments [13] - OpenAI's CEO warned that the AI sector may be facing a situation similar to the internet bubble at the turn of the century, with 95% of surveyed companies not yet seeing returns on AI investments [14]