A Swiss bank has paid for some 20 “high net-worth” clients from mainland China to travel to its Alpine headquarters and collect mud and grass that they will later eat. The invitation reflects how the central European country has found a unique way to appeal to an increasing number of mainland VIP tourists roaming the world for a novel experience. Among the quirky tour options, visitors can be guided by a “crazy cook who calls himself an alchemist”, said Peter Zombori, founder of Premium Switzerland, a service provider that caters to the ultra-rich. The number of Chinese visitors to Switzerland reached 60,821 in May, an increase of 18% from a year earlier, according to the Swiss Federal Statistical Office.