He gave the example that some investment banks in the country have yet to pay sufficient attention to ensuring that the companies they underwrite are investable as their international peers do, and called for efforts to nurture sound professional conduct.

China's capital market has made significant headway in bringing rules and practices more in line with international standards in recent years.

Since 2019, the country has adopted the registration-based initial public offering system－which is widely used in mature capital markets and gives market forces a greater say in IPO processes and pricing－in Shanghai's STAR Market, Shenzhen's ChiNext and the Beijing Stock Exchange.

A-share companies have also engaged more in the disclosure of environmental, social and governance-related information that international investors are concerned with.

As of the end of October, up to 1,462 A-share companies have released ESG reports this year, accounting for 31.21 percent of total A-share companies, up from 27.22 percent in 2021, according to market tracker Wind Info.

Liu Ti, deputy general manager of the Shanghai Stock Exchange, said institutional opening-up of the capital market features efforts to proactively introduce international rules and practices of the best standards into the domestic market.

"Different markets have different rules. If we cannot align ours with overseas ones in certain ways, the opening-up progress will be substantially affected," Liu said at the recent Shanghai International Financial Center Development Forum 2022.

To further facilitate capital market opening-up, Liu said the exchange seeks to attract quality overseas companies to issue Chinese Depository Receipts－negotiable certificates exchangeable with their domestic shares－on the Shanghai bourse.

Efforts will also be made to improve and expand the Shanghai-Hong Kong Stock Connect, including helping the exchange-traded fund connect program cover more regions, and strengthen cross-border cooperation regarding market indexes, Liu said.

Trading via ETFs under the stock connect mechanism between Shanghai, Shenzhen and Hong Kong commenced in July, meaning that investors based on the Chinese mainland have gained access to eligible Hong Kong-listed ETFs and vice versa.

Also pointing to a steady process of improving market connectivity, the country has expanded the Shanghai-London Stock Connect scheme this year.

The connect, which initially enabled Shanghai-listed companies to raise capital by issuing Global Depository Receipts, or GDRs, in the United Kingdom when it was launched in 2019, now allows eligible companies listed in both Shanghai and Shenzhen to issue GDRs in the UK, Switzerland and Germany.

Official data showed that five A-share companies had issued GDRs in the UK and seven in Switzerland as of early November, raising more than $8.5 billion in total.