The date – as well as being Swift’s year of birth – refers to her album and live tour of the same name, which she will perform in Shanghai in November.

But the date – and the initials TS – are particularly sensitive in China, as they signify the Tiananmen Square massace in 1989, when hundreds of students were killed in pro-democracy protests.  A promotional video posted to China’s microblogging site Weibo by Heritage66Company, the Nashville-based branding company that is representing her in China, features Swift introducing the clothing line to her fans and greeting them in Chinese.

“Ni hao, it’s Taylor Swift. Be sure to check out my new authentic merchy [merchandise], now available in China,” she says.

The video also features a number of models, and Swift herself, wearing official merchandise emblazoned with 1989.

So sensitive is the date that censors have blacklisted any consecutive combinations of the numbers 6, 4 and 89 on Chinese social media sites. Chinese internet users have proved adept at using coded language to refer to the politically sensitive event, often referring to it as “May 35” instead of “June 4” to avoid the censors’ attention.

Swift’s US website features bracelets, bags and hairties emblazoned with “T.S. 1989”. For Chinese consumers, the initials could stand for Taylor Swift or Tiananmen Square. It’s not clear whether these items will be made available for Chinese fans.

So far Swift has managed to shake off China’s censors – JD.com already sells the 1989 album on its online store.