Exquisitely garbed in a traditional cheongsam dress, 76-year-old Sang Xiuzhu is one of an unlikely vanguard of elderly influencers storming Chinese social media with videos of glamour in the golden years.

China is getting old fast and Beijing is faced with the monumental challenge of how to provide for tens of millions of retirees.

But this has also opened opportunities for those who are financially comfortable in their dotage and able to harness the commercial possibilities of technology.