Jack Ma would be on vacation in Spain in the company of friends and business associates. The news comes shortly after the founder of Chinese e-commerce giant Alibaba Group reappeared in Hong Kong amid speculation about his whereabouts. As reported by the Hong Kong newspaper on Tuesday The Standard , Ma would have flown to the Iberian country in a private ‘jet’ at dawn on October 16. Later, he settled on a yacht of his property in Ibiza, from where he set out to sail for rest. The billionaire had kept a low profile before his public appearance last week…