The new Chinese President, Xi Jinping, has said he will fight for “the great renaissance of the Chinese nation,” in his first speech as head of state, the BBC reports. Closing the annual National People’s Congress, he urged delegates to reject extravagance and fight corruption. At a news conference later, new Premier Li Keqiang said sustainable economic growth would remain the top priority. The comments come as the Communist government completed a once-in-a-decade leadership transition. President Xi’s address was a patriotic speech urging greater national unity, the BBC’s Martin Patience reports from Beijing. Its nationalistic tone will reinforce the view that he will pursue a more assertive foreign policy during his decade in power, our correspondent says. President Xi issued a warning to China’s military, saying it should improve its ability to “win battles and… protect national sovereignty and security”. He also stressed that continued economic development was essential, urging the nation to achieve what he called “China’s dream”. The same themes were taken up at a rare news conference by new premier Li Keqiang, who has taken over the the day-to-day running of the country, succeeding Wen Jiabao.