Britain must become China's "best partner in the West", Chancellor of the Exchequer George Osborne said as he arrived in Beijing at the head of a top-level business delegation.
The Chancellor is embarking on a week-long visit, covering thousands of miles as he criss-crosses the country to promote UK trade not only in the Chinese capital and in financial centre Shanghai, but also in some of the emerging cities of the interior which are expected to drive future growth.
Mr Osborne - whose trip comes ahead of next month's state visit to the UK by President Xi Jinping - said that China's summer of financial turbulence and the recent slowdown in its GDP growth should not divert the UK from its strategy of integrating with the world's fastest-expanding regions.
With the east Asian giant expected to be the world's largest economy by 2030, Mr Osborne said: "There are those that say we should fear China's rise - that we should somehow guard ourselves against it. But we both reject such thinking, which would simply leave the UK slipping behind. Instead, we should embrace it."
In an article for The Observer jointly penned with Treasury minister and former Goldman Sachs chief economist Lord (Jim) O'Neill, the Chancellor continued: "We want a golden relationship with China that will help foster a golden decade for this country. It is an opportunity that the UK can't afford to miss.
"Simply put, we want to make the UK China's best partner in the West."
Accompanying Mr Osborne are not only six Government ministers and a group of executives from leading UK companies, but also civic leaders from "Northern Powerhouse" councils Liverpool, Manchester, Sheffield and Trafford and the heads of major cultural institutions including the British Museum, National Theatre and Cornwall's Eden Project. A number of cultural exchanges are expected to be announced during the visit.
"We want to promote understanding between our two great cultures, which have arguably done more to shape the world than any other," said Mr Osborne.
He acknowledged the "inevitable risks" of forging economic links with China, which was forced to devalue its renminbi currency over the summer to rein in market volatility which saw the value of shares on the Shanghai stock exchange tumble 30% over three weeks - and by 8.5% in a single day in August.
But he insisted: "Recent volatility should not and will not put us off. It should drive us forward so that we integrate China's new financial markets with our own so they are deeper and better able to absorb shocks.
"Then it should serve as a reminder to get our house in order so that we can deal with global difficulties."
Britain's drive to build links with emerging economic powers has seen the UK attract more Chinese investment since 2010 than Germany, France and Italy combined, with exports up 73%, said the Chancellor.
"Even as China's growth slows, it will continue to be a powerhouse for the global economy," he added.
Continued growth will create further opportunities for Chinese investment in the UK and for Chinese firms to locate facilities in Britain, as electronics company Huawei did last year, said Mr Osborne. And he said that expected increases in Chinese domestic consumption of goods and services will create opportunities for UK manufacturing, infrastructure, retail and financial services.
He pledged the Government will ensure that the benefits of the stronger relationship will be felt not only in London, but across the UK, with businesses from the north of England, Wales and the south-west represented on the trip.
"We are at a critical moment in our relationship with China," said the Chancellor. "We need to double our efforts to strengthen our economic links, help British firms enter the market there, and attract more investment into the UK and the Northern Powerhouse.
"Rather than standing back and being left behind, we must make the most of the opportunities that a growing China presents to us here in Britain."
The trip marks a continuing upswing in UK-China relations, which were briefly thrust into the deep-freeze by Beijing's displeasure at Prime Minister David Cameron's 2012 meeting with the Dalai Lama.
In a concerted effort to restore good relations, both Mr Cameron and Mr Osborne visited in 2013, when the PM urged China to invest in British infrastructure including nuclear power stations and high-speed rail.
Despite growth slowing to 7% in the first half of this year, China continues to represent around a quarter of the world's GDP growth. It is the sixth biggest market for exported British goods.
Mr Xi's trip to the UK will be the first state visit by a Chinese leader for 10 years, and will include a stay at Buckingham Palace as the guest of the Queen.