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As for external challenges, major risks might emerge from policy changes in developed countries, such as the United States, according to Su Jian, an economics professor at Peking University.

As a result of the sanctions, all property and interests of the designated persons subject to US jurisdiction are blocked, and US persons are generally prohibited from engaging in transactions with them.

As for private companies, they are used to sharing financial costs through risk management and competitive procurement practices.

As an inalienable part of China, the HKSAR is a local administrative region that enjoys a high degree of autonomy and comes directly under the central government, the spokesperson said.

As a key part of the China-led Belt and Road Initiative, it is the first project undertaken by a Chinese-invested company to cover an entire river.