Xi, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, made the remarks when delivering a speech at a gathering to commemorate the 30th anniversary of the founding of Hainan province and the Hainan Special Economic Zone.
Now each household in northern China consumes an average of 4,000 kilowatt-hours of electricity in the winter heating season, instead of the previous 3 to 4 metric tons of coal, a major contributor to air pollution during the heating supply season, he said.
The definition of the CPPCC's nature and tasks was enriched, and the idea of "socialist consultative democracy" was written into the charter.
Hung and Yok were in Xi'an to attend a ceremony paying homage to Huangdi, also known as the Yellow Emperor, regarded as one common ancestor for all Chinese.
China's top legislative and political advisory body started its annual sessions, kicking off an important political season that will highlight new missions for the country's goal of a "great modern socialist country".