The STAR Composite Index, which reflects the performance of stocks on China's sci-tech innovation board, closed 1.33 percent higher at 2,018.70 points on Tuesday.
The STAR 50 Index, which tracks the 50 largest stocks listed on the board that also meet certain liquidity requirements, closed 1.62 percent higher at 1,690.56 points.
The sci-tech innovation board, commonly known as the STAR Market, was inaugurated in June 2019 at Shanghai Stock Exchange. It is designed to support companies in the high-tech and strategic emerging sectors.
China's STAR Composite Index closes higher Tuesday
Beijing continues to swelter in a heatwave that began on Saturday, with temperatures reaching 35 degrees Celsius again on Tuesday, though a cooler and rainy weather is expected in the coming days.
Thunderstorms are forecast for most parts of Beijing on Tuesday evening, along with gusts reaching force seven to eight in some areas, the Beijing meteorological observatory said, issuing a yellow thunderstorm warning at 11:10 on that day.
The next two days will see more rains and lower temperatures, bringing relief to the citizens from the prolonged heat, according to the observatory.
Heatwave continues to scorch Beijing
