David Cameron is to lead a new trade delegation to China to capitalise on the thaw in Britain's relations with Beijing.
The Prime Minister said he wanted to forge a relationship for the long term that would open up markets for British firms while bringing more Chinese investment into the UK.
Relations were effectively put into deep freeze last year after Mr Cameron infuriated the Chinese by meeting the exiled Tibetan spiritual leader, the Dalai Lama.
Mr Cameron, who has already made one visit to China since becoming Prime Minister, will be taking a large party of ministers and business leaders early next month.
The Treasury said on its Twitter feed that the Prime Minister's visit to China meant that Mr Osborne's Autumn statement would be put back a day from December 4 to December 5.
"As China's new leadership sets its direction for the next 10 years, as their country's star continues to rise in the world, I will take senior British ministers - as well as business leaders from every sector, large and small - to forge a relationship that will benefit both our countries and bring real rewards for our peoples," he said.
"Opening the way for British companies to benefit from China's vast and varied markets and preparing the way for a new level of Chinese investment into the UK.
"This is a relationship that is for the long term, that matters for Britain and China, and which I look forward to continuing to strengthen in the months and years to come."
In his visit last month, Mr Osborne announced that Chinese firms would be allowed to invest in a new generation of nuclear power stations while visa restrictions would be relaxed to encourage high-spending Chinese to come to London.
In his speech, Mr Cameron - who is leading trade visits to India and the Gulf this week - said he hoped to encourage more investors from the Gulf with a new electronic visa waiver system for short-term visitors from Oman, Qatar, the United Arab Emirates, and Kuwait.
He argued that the economic rise of countries such as China, India and Brazil should not be seen as a threat to the West, but as an opportunity for Britain to carve out a place alongside them in a more prosperous world.
"As the number of university places surges in India, as China creates more patents than any other country in the world, and as Brazil becomes the world's first sustainable biofuels economy, people ask the question, will they be the winners and we be the losers? I believe we need to say a very firm 'no'," he said.
"The global economy is not a zero-sum game. If we make the wrong decisions, they may well succeed at our expense but there is a clear way forward for us to carve out a place for Britain to be a real success, alongside these new economic powers."