Increase interaction with customers. Secret customers of Haidilao are an activity launched by Haidilao, mainly to increase the interaction with customers and let customers better experience Haidilao's services. After becoming a mysterious guest of Haidilao, you can get the activity information from social media accounts such as Haidilao official Weibo and WeChat official account, fill in the registration form as required, and then you can participate in the activity after approval.