Asia stocks struggle for direction ahead of Trump-Xi meeting; China shares down

Asian stock markets experienced a mixed performance on Wednesday as investors remained cautious ahead of the U.S.-China summit. Wall Street ended the prior trading session mixed, with U.S. stock index futures trading largely unchanged during Asian hours. South Korea's KOSPI gained 0.2%, driven by a significant rise in Samsung Electronics shares.

Japanese markets, which were closed, saw a decline in Nikkei 225 Futures. Chinese and Hong Kong shares also experienced a slight downward trend, with the Shanghai Composite falling 0.4% and the Hang Seng dipping 0.9%. The focus of the meeting between U.S. President Donald Trump and Chinese President Xi Jinping is expected to include trade negotiations, artificial intelligence, supply chains, and geopolitical concerns.

However, investors are skeptical about the potential for significant progress, as China's ambassador to the U.S. has outlined several "red lines" that Washington should not cross, such as issues related to Taiwan and human rights. Geopolitical factors, including the recent talks between Iran and the U.S., also continue to impact oil prices, which have fluctuated around $99 a barrel.

Despite some optimism surrounding the Iran negotiations, there is still a risk of conflict, which could disrupt markets further.