Some Hong Kong travel agencies are offering tours featuring “five-minute clearance” at the revamped Huanggang Port when it opens on Monday, but the security chief has urged those who do not need to use the crossing immediately to delay their visits. Three days before the port’s official opening, the South China Morning Post on Friday found a number of tour packages advertised on social media that promoted the redeveloped border checkpoint as a new attraction on trips to mainland China. An...