Stocks in Asia Pacific were mixed on Wednesday as concerns surrounding the coronavirus pandemic continued to linger.
Mainland Chinese stocks built on the solid run they've had so far this week as they led gains in the region for yet another day. The Shanghai composite closed 1.74% higher at around 3,403.44 while the Shenzhen component rose 1.841% to end its trading day at about 13,406.37. Hong Kong's Hang Seng index also added 0.42%, as of its final hour of trading.
Stocks in mainland China have seen a strong surge so far this week, with the Shanghai composite soaring nearly 6% on Monday. That came after the state-owned China Securities Journal said investors should look forward to the "wealth effect of the capital markets" and the prospect for a "healthy bull market."
"There has been a lot of positive surprises in the market and that continue to fuel the market sentiment," Frank Tsui, senior fund manager at Value Partners, told CNBC's "Street Signs Asia" on Wednesday. "Near term, I think the positive sentiment will continue to be driving the market performance."
Still, Tsui said investors should be "more cautious" and question whether the share price performance is being driven by fundamentals or purely based on sentiment.
Elsewhere, however, other major markets in the region saw losses on the day.
In Japan, the Nikkei 225 dipped 0.78% to close at 22,438.65 while the Topix index shed 0.92% to 1,557.23. Over in South Korea, the Kospi ended its trading day 0.24% lower at 2,158.88.
Meanwhile, the S&P/ASX 200 in Australia dropped 1.54% to close at 5,920.30.
Overall, the MSCI Asia ex-Japan index rose 0.49%.
A World Health Organization official said Tuesday that it shouldn't "be a surprise" if coronavirus deaths start to rise again. Reported Covid-19 cases globally accelerated in June while the death toll has been falling. WHO officials warn that that there's a lag between rising cases and increasing deaths. It takes weeks after contracting the virus to fall seriously ill and potentially die from the coronavirus.
Cases have recently spiked stateside with Texas reporting more than 10,000 additional Covid-19 cases Tuesday — a record-breaking daily surge.
In Asia Pacific, a recent uptick in cases in parts of Australia has prompted officials in Victoria state to impose stay-at-home restrictions in areas such as metropolitan Melbourne for six weeks.
Bank Julius Baer's Mark Matthews told CNBC on Wednesday that there's no way to "put a positive" on the lockdown in Australia's Victoria state.
"The whole Australian story was basically a cyclical recovery story in the second half and … the domestic side of that will now be compromised," said Matthews, who is head of research for Asia at the firm.
The U.S. dollar index, which tracks the greenback against a basket of its peers, was at 96.874 after seeing an earlier high of 97.045.
The Japanese yen traded at 107.44 per dollar after after seesawing between levels below 107.4 and above 107.7 against the greenback yesterday. The Australian dollar changed hands at $0.6945 after touching levels around $0.693 yesterday.
Oil prices were lower in the afternoon of Asian trading hours, with international benchmark Brent crude futures down 0.21% to $42.99 per barrel. U.S. crude futures also shed 0.25% to $40.52 per barrel.
— CNBC's Noah Higgins-Dunn contributed to this report.