Chinese Vice Premier Wang Yang made the pledge when attending the launching ceremony of China-ASEAN Year of Tourism.
Culture officials in Suzhou, the so-called Venice of the Orient, have drafted regulations aimed at preserving the city's 2,500-year-old walls.
Xinjiang's general aviation fleet will import 10 new aircraft from Switzerland this year to develop tourism.
China will dredge sections of the Yangtze River this year to deepen it and increase the amount of freight traffic that can use the waterway.
China should build a space launch center dedicated to commercial missions, a senior scientist suggested.
A new fund will be set up to pool the knowledge of the country's top scientists to discover the "unique" cause of smog, Premier Li Keqiang said.
China will not allow large-scale unemployment, Premier Li Keqiang told reporters on Wednesday.
The US Secretary of State will visit Beijing on Saturday to hold talks with Chinese leaders and senior officials on a range of bilateral and multilateral issues.
US Secretary of State Rex Tillerson will visit China from March 18 to 19.
Premier Li Keqiang said China will step up efforts to delegate power to lower levels.