It is all one of perspective.
Both the Chinese and Russian, and probably over a hundred other countries of the world regard Great Britain, and the other empire building Western European powers of the last 2 or 3 hundred years, as some of the worst examples of invaders and exploiters, Napoleon, Hitler and the general expansionist policies of Western European countries, killing millions of the local inhabitants, plundering those countries resources, the UK Royalty even display the stolen gems from countries it plundered.
The history of the British Empire, particularly the East India Company is one of centuries of shame, especially against China, India but many others.
China is becoming the most important country in the world, India is climbing in economic importance and now exceeds UK GDP.
The 19th century was when the UK time at the top.
20th century was when the Americans ruled.
The 21st century is the Asian century.
The best thing the UK can do is slow it inevitable decline as much as possible. We could still enjoy a decade or two of quite good standard of living. The UK economy has already starting to perform like an Emerging economy rather than a strong and stable one. Empires rise and fall, propaganda is no ones exclusive tool.