Four or five o'clock. According to relevant information, Jin Yong said in an interview: "My secret of health preservation is: don't worry, be happy. I usually like reading history books and study for about 4 hours every day. I used to work at night when I was making a newspaper. I don't go to bed late every day, but I go to bed early (humorously) because I don't go to bed until four or five in the morning. Sometimes I have to play cards for a while after the night shift, which is a habit left by reporters. I want to watch TV now, but I don't watch much, mainly news. "