Seven o'clock. Dr. Zhang Baggner's appointment was updated to 7: 00 am, and Dr. Zhang Baggner took the number at the registration window of the Affiliated Hospital of Inner Mongolia University for Nationalities. Zhang Bagenna, male, 47 years old, deputy director and chief physician of Tongliao Institute of Mongolian Medicine, a famous kidney disease expert and a famous Chinese medicine practitioner at the municipal level. How many times have you attended academic conferences on kidney disease at home and abroad?