Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, attended the event and delivered an address.
President Xi Jinping on Friday stressed the need to fully and faithfully implement the "one country, two systems" policy.
President Xi Jinping met with newly inaugurated Chief Executive of the Hong Kong Special Administrative Region John Lee here on Friday morning, expressing full support for the chief executive and confidence in Hong Kong's future.
Xi congratulated the Hong Kong compatriots and extended his best wishes on the occasion marking the 25th anniversary of Hong Kong's return to the motherland.
President Xi Jinping has stressed keeping the lifeline of science and technology firmly in China's own hands and making the country's development more independent, self-reliant and secure.
President Xi Jinping has underscored the exemplary role of large-scale grain growers in encouraging more farmers to contribute to the country's food security.
Chinese President Xi Jinping and his Guyanese counterpart, Irfaan Ali, exchanged congratulatory messages on Monday to celebrate the 50th anniversary of the establishment of diplomatic ties between the two countries.
Chinese President Xi Jinping has underscored the importance of better listening to the people's voices by making use of the internet and other channels.