Tsang also promised to promote greater economic development amid a better quality of life, reported Xinhua, China's official news agency.
Hu, in his speech, paid tribute to "one country, two systems" in describing Hong Kong as belonging to China but governing under a separate system. "Hong Kong has made great progress in all fields of endeavors," said Hu.
The celebrations were tempered Sunday by the thousands who marched through Hong Kong calling for full democracy. Hong Kong's leader is chosen by a committee loyal to Beijing. Only half of the 60-seat Legislature is elected by the public. The rest are chosen by special interest groups.