If wanted a reason to visit Asia, with this AirChina fare you end in Hong Kong for the HK International Film Festival which takes place between 19th March-5th April. Although most of the European visitors comment on language barrier it is still a good reason to visit. The season is perfect and you can have a low cost to other destinations nearby, like Hanoi or inland China.
The company is correct, from my own experience, and the transit time in Beijing is a plus for the flight.
There are options from London starting at 410 euros and Milan at 460 euros, with the same airline.
Don’t forget to book in advance as it is expensive but a great experience- I have visited Hong Kong and love it. Don’t forget travel insurance while you leave your country and especially out of Europe.