Taiwanese lawmakers are seeking an audience with Pope Francis as concerns grow over Taipei’s diplomatic relations with the Vatican, after it reportedly promoted bishops endorsed by Beijing. The Holy See is one of only 20 countries that recognise Taipei instead of Beijing, but Pope Francis has sought to improve ties with Beijing since he took office in 2013. Beijing still sees self-ruled Taiwan as part of its territory and demands that allies of Beijing must give up any official ties with the island. Five legislators from Taiwan’s foreign affairs and interior committees are leaving on Saturday for an eight-day visit to the Vatican, Italy and Greece. Lawmaker Tsai Shih-ying, who is part of the group, said they were “hoping to have an audience with the pope” but it was still to be confirmed. “We will express our stance and communicate on issues ... relating to Taiwan-Vatican ties,” he said, without elaborating. Their visit comes after the Vatican chastised Hong Kong cardinal Joseph Zen Ze-kiun , who accused it of “selling out” to Beijing over the bishop issue. Zen, bishop emeritus of semi-autonomous Hong Kong, confirmed an AsiaNews website report that a Vatican diplomat asked two underground Chinese bishops recognised by the Vatican to resign in favour of state-sanctioned prelates. There are an estimated 12 million Catholics in mainland China, but the Vatican has not had diplomatic relations with Beijing since 1951, two years after the founding of the communist People’s Republic. Vatican move to make way for Beijing-backed bishops raises flags for Taipei Although Beijing and the Vatican have improved relations in recent years as mainland China’s Catholic population has grown, they remain at odds over which side has the authority to ordain bishops. Previous attempts to restore ties have floundered over Beijing’s insistence that the Vatican must give up its recognition of its rival Taiwan and promise not to interfere in religious issues in mainland China. Beijing has stepped up pressure on Taiwan since President Tsai Ing-wen took power in 2016 as her government refuses to acknowledge that the island is part of “one China”. Former Taiwanese allies Gambia, Sao Tome and Panama have established ties with Beijing since Tsai was elected in January 2016.