Content is my production it is strictly prohibited to carry copyright infringement to pursue all rights! The prescriptions and actions introduced in the video should be carried out after the guidance of professional doctors. oh# middle-aged and elderly lecture hall is welcome to subscribe free of charge: / channel 享受幸福人生 。 The Middle Aged Lecture focuses on the emotional and health issues of the elderly. You can subscribe to our channel for free and at the same time light up the small bell to receive timely movie update reminders. Your support is our greatest motivation.