China targeted 2013 economic growth of 7.5 percent and vowed an unwavering fight against corruption Tuesday at the start of an annual parliamentary session that will seal its transition to new leadership.

Outgoing premier Wen Jiabao pledged to protect China's "territorial integrity" as the government laid down another double-digit rise in military spending to modernize the world's largest standing army, at a time of mounting tensions.

In his final major act after a decade in charge of day-to-day government, Wen delivered a "work report" to about 3,000 delegates from across the country at the opening of the National People's Congress (NPC), China's rubber-stamp parliament.

The NPC is meeting for nearly two weeks in Beijing and will finalize a power transfer to Li Keqiang as Wen's successor, and Communist Party supremo Xi Jinping as state president.

Wen bowed deeply to the representatives arrayed under a giant red star in Beijing's Great Hall of the People, some in ethnic dress, before starting his farewell speech, which lasted an hour and 40 minutes.

The premier began with a list of achievements during his time, among them manned spaceflight, China's first aircraft carrier, its own satellite navigation system, a high-speed rail network, and hosting the 2008 Olympics.

But public concern on the country's lively social media scene is mounting about a range of problems including corruption, pollution and skewed economic growth as the country's rich-poor chasm widens.

The new leadership have raised expectations with a deluge of propaganda during their first four months running the Communist Party, with pledges of cleaner government and greater devotion to people's livelihoods.

"We should unwaveringly combat corruption, strengthen political integrity... and ensure that officials are honest, government is clean and political affairs are handled with integrity," Wen said.

The wealth of party leaders at all levels has become a burning issue in China, with foreign media reports last year focusing on the riches accrued by the families of Xi and Wen themselves.

Outside the hall, ordinary citizens were skeptical about the government's promises. Xian Lan, a pensioner, asked: "What is the point of all these wasteful, expensive meetings when there are so many poor people in China?"

China's economy is a key driver of the global recovery, but has struggled in the face of weakness at home and in overseas markets, with Europe assailed by its debt crisis and US growth remaining anemic.

It grew 7.8 percent in 2012, its worst performance for 13 years, but normally exceeds the target set at the NPC. Wen said the target for this year was about 7.5 percent, "a goal that we will have to work hard to attain".

The inflation target was set at 3.5 percent, after it reached 2.6 percent in 2012, with the premier adding China was "still under considerable inflationary pressure".

A separate government document laid down a 10.7 percent rise in defense spending to 720.2 billion yuan ($115.7 billion).

China's military budgets have risen steadily in recent years, and experts say the actual totals are usually substantially higher than the publicly announced figures.

Wen's voice grew to its loudest when he pledged to "resolutely uphold China's sovereignty, security and territorial integrity" -- comments that were met with loud applause.

Japan, which has the fiercest territorial rows with China, "intends to continue watching China's defense policy and its military strength closely", Foreign Minister Fumio Kishida was quoted by Kyodo News as saying.

The NPC will pass measures pre-approved by party leaders, this year including a reorganization of government bureaucracy that will see major ministerial changes, likely to include the abolition of the much-maligned railways ministry.

It may also address China's "re-education through labor" system, which sees petty offenders sent to labor camps without trial and has come under fire for its abuse by local governments seeking to quash dissent.

But Wen did not mention the subject.

Leaders must start meeting the public's raised expectations, say analysts, or risk exacerbating the mounting discontent about corruption, inequality, pollution and other woes.

Zhang Xin, a political scientist at Renmin University in Beijing, described Wen's speech as unremarkable, not making major announcements and mainly summarizing the outgoing government's achievements, which he said were limited.

"This report was very ordinary, nothing really stuck out," he said. "I would describe the achievements of this government as moderate." (AFP)