Jane Lyu flew to Malaysia on Tuesday to visit a city that she had never heard of until recently. The 32-year-old engineer from Guangxi, southern China, first spotted it on Weibo. Now, standing outside the pink-domed Putra Mosque in Putrajaya, she explains through a translation app how the country’s administrative capital, a planned city barely three decades old, ended up as the first stop on her Malaysian itinerary.