Hong Kong is a safe and welcoming city “full of opportunities,” leader John Lee has told students at a secondary school in Laos during a tour of Association of Southeast Asian Nations (ASEAN) in an effort to promote Hong Kong and attract talent. Lee arrived in Vientiane, the capital of Laos, on Sunday afternoon, beginning his six-day ASEAN trip that will also take him and a delegation to Cambodia and Vietnam. Over 30 members from Hong Kong’s business sector, including representatives of Swire, Cathay Pacific, Sino Group and other companies, and two legislators joined the trip. On Monday, Lee v…