He was the richest man in China until he collapsed. The founder of the Alibaba e-commerce platform, Jack Ma, practically disappeared from public life five years ago, after a resounding clash with the authorities of his country. In this media silence he has been seen on a few occasions, such as on a holiday in Ibiza or when he announced that began to work as a visiting university professor. However, this Monday the businessman has reappeared in a public event with the Chinese president, Xi Jinping, an event that has been seen as the official reconciliation between Ma and the Beijing government once their differences have been overcome.