Jolin Tsai's vigorous dance caused her waist pain, Josephine Siao's feet were in severe pain, Jacky Cheung's voice was hoarse due to tension, and Nick Cheung had a depression episode. On the night of June 11th, when Eason Chan held his concert in Hong Kong, he revealed that his vocal cord was severely damaged. Artists often stay up all night and bear great work pressure for a long time, thus they are prone to "occupational..." diseases.