Beijing concert-goers say they were prevented from displaying rainbow imagery at a pop singer’s performance on Saturday, in a sign of increasing tightening on LGBTQ expression in China. Fans attending a concert by Taiwanese singer Chang Hui-mei — better known by her stage name A-Mei — say they were prevented from wearing shirts with rainbows on them inside the Cadillac Arena in Beijing, according to participants who posted about the incident on social media.