Goldman Sachs has upgraded its outlook on Chinese stocks, predicting a potential rise of 15% to 20% following recent stimulus measures from Beijing. The firm noted that gauges tracking Chinese equities could see significant gains if authorities deliver on promised policy actions. This optimism comes amid a notable rally in Chinese markets, with the CSI 300 index recently surging 11% upon reopening after a week-long holiday. However, skepticism remains as global funds express caution over potential overvaluation in the Chinese stock market. On the other hand, Hong Kong's Hang Seng Index faced a sharp decline, dropping 9.4%, marking its worst single-day loss since 2008, as investors reacted to the lack of substantial new stimulus measures from China's National Development and Reform Commission. The trading turnover in China's A-share market has also reached record highs, exceeding 3 trillion yuan ($424.77 billion) as of Tuesday's trading session, reflecting heightened activity amid the market fluctuations.