Beijing has appointed Yuan Gujie, a former senior Guangdong official who vowed to advance rules and mechanisms connectivity within the Greater Bay Area, as deputy director of its liaison office in Hong Kong.State news agency Xinhua announced the appointment on Monday. Yuan, 58, will succeed diplomat Liu Guangyuan, who is expected to retire at 61.The liaison office’s top leadership includes director Zhou Ji and four deputies.Yuan headed the provincial Political and Legal Affairs Committee and...