Alibaba founder Jack Ma has advised the employees to follow the spirit of '669' for an improved life. 669 signifies sex, six times, six days and duration being the key. Earlier he talked about the spirit of 996, which means working from 9am to 9pm, 6 days a week. The 996 philosophy was criticized gravely by the tech industry. The 669 has also created quite a stir in the social media and many people disapproved the idea.