A 75-year-old Chinese actress has ignited a nationwide debate over age representation after portraying a teenage girl and sharing a kiss with a much younger male co-star in a mini-drama. Liu Xiaoqing, a cherished figure in Chinese cinema with over 10 million social media followers, has long been celebrated for her youthful energy and commitment to her craft, earning her the title of China’s “ageless goddess.” In the mini-drama Splendid Tranquility, which aired in February, Liu plays Su Wanqing,....