China’s stocks recently caught the world’s attention with their best performance in years but the upswing wasn’t here to stay. Despite a short-term trend of large growth on Tuesday, many major stock indexes saw slides, soon after Chinese authorities failed to introduce a new round of stimulus measures like investors had hoped. Hong Kong’s benchmark Hang Seng Index endured the most dramatic fall, closing with its heaviest one-day drop since 2008, over 9 percent.