The Z-8 helicopter team of Chinese People's Liberation Army (PLA) Garrison in the Hong Kong Special Administrative Region are seen at Shek Kong barracks in Hong Kong, June 30, 2017.[Photo/Xinhua]

After the review, Xi was briefed on the work of the PLA Garrison in the HKSAR.

"The garrison is an important embodiment of national sovereignty, an important force to safeguard 'one country, two systems,' and an important cornerstone of Hong Kong's prosperity and stability," Xi said.

Xi ordered the troops to improve the awareness of political integrity, state power and the overall situation, and firm up the responsibility for and commitment to safeguarding "one country, two systems."

He urged the garrison to make efforts to enhance "combat readiness" so as to fulfill its role as a powerful stabilizing force.

Xi spoke highly of the garrison, saying it has steadfastly carried out decisions and instructions of the CPC Central Committee and the Central Military Commission, and conscientiously implemented the principle of "one country, two systems," the Basic Law and the Garrison Law over the past 20 years.

"The garrison has done an excellent job in fulfilling all defense-centered tasks, demonstrating the PLA's image as a mighty and civilized force and winning wide praise from Hong Kong compatriots," he said.

Xi called for efforts to build a highly centralized and unified military force, and run the military in accordance with law to forge a strong force with ironclad belief, faith, discipline and responsibility.

Xi's inspection at Shek Kong barracks came on the second day of his three-day trip in Hong Kong. He will also attend celebrations marking Hong Kong's 20th return anniversary and the inauguration of the HKSAR's fifth-term government.