MACAO, Dec. 20 (Xinhua) -- Chinese President Xi Jinping on Saturday hailed the remarkable achievements Macao has scored since its return to the motherland 15 years ago, saying it makes not only Macao residents but also people of all ethnic groups in China proud.

"The valuable experience gained by Macao along the way should be cherished and remembered by Macao compatriots and people of all ethnic groups in the entire nation," Xi said at a gathering marking the 15th anniversary of Macao's return.

The president highlighted the importance of full, correct understanding and implementation of the principle of "one country, two systems."

He said the implementation of the principle must strictly abide by the Basic Law, focus on economic growth and people's wellbeing, uphold inclusiveness and mutual assistance, and promote broad unity under the banner "love the country, love Macao."

"The implementation of 'one country, two systems' will make steady and continuous progress along the right track and Macao will have a better future," said Xi.