Qin Sixin is the second shareholder of David Group in Macau, and runs the "David Du Guild Hall". Rumors about Roi's father are full of rivers and lakes. Qin Sixin David Group is said to have been born on the basis of "Macao's traditional pillar industries" and is now one of the five related intermediary companies in Macao. As the name implies, the so-called intermediary company is an intermediary company that specially introduces mainlanders to visit Macao. There is no public official record between Qin Sixin and David Group in Macau, but the name Qin Sixin appears on the list of donors of a charity together with many rich people. It is rumored that the value of Qin Sixin is not less than10 billion. In the 1990s, the gambling industry in Macau rose, and he went there to fold horses. Many bosses in Jiangsu, Zhejiang and Shanghai are familiar with this name. Qin Sixin is mainly responsible for contacting mainland customers and handling mainland affairs, and the two sides jointly made a fortune in the process of Macao's take-off;