BEIJING, Sept. 22 -- Chinese Premier Li Keqiang has vowed support for the Macao Special Administrative Region (SAR) and closer ties between the region and the mainland.

Li made the remarks Monday while installing Chui Sai On as Macao chief executive. Chui, 57, was re-elected a fourth term of the Macao SAR on Aug. 31 as the sole candidate in the election.

Congratulating Chui on his appointment and praising his work during the last tenure, Li praised the joint efforts of the SAR government and Macao people from all walks of life under the support of the central government for tremendous achievements in the practice of "one country, two systems" during the last 15 years.

According to Li, the central government will continue to "thoroughly and accurately" implement the principles of "one country, two systems," "Macao people administering Macao," and a high degree of autonomy for the region while following the Macao Basic Law.

"[The central government] will fully support the chief executive and the SAR government in the rule of law, actively push forward the exchange and cooperation between Macao and the mainland, as well as ensuring Macao's unique role in the country's overall development," Li said.

Chui expressed gratitude for central government support for Macao , vowing to fulfil the duties of chief executive and boost the region's long-term prosperity, stability and development.