$Goldman Sachs(GS)$ maintains its overweight rating on A-shares and downgrades its rating on Hong Kong stocks to neutral. [Key Takeaway] China tech stocks have fallen from early-year highs to near lows. On the surface, it's a pile-up of negative headlines. But beneath lies a clear throughline: Traditional tech giants are trading short-term profits for long-term AI positioning, while the market only wants to pay for "profits today." This temporal mismatch, compounded by HK liquidity being siphoned into pure-play AI names, is reshaping the entire valuation framework for China tech. 1. The Root of Valuation Collapse: A "Temporal Mismatch" Standoff Traditional tech giants ( $TENCENT(00700)$ ,