How to judge whether a concert is successful?

1. Look at the ticket sales. Are they all sold out? Is it sold out in minutes or seconds? The shorter the time, the greater the chance of a successful concert.

2. Check the capacity of the concert, because even if the tickets are sold out, it is possible that scalpers bought them, or fans bought several tickets per person. If the seats are basically full, it must be very popular.

3. In the case of live singing, if the singer is out of tune, has broken notes, or does the wrong dance, then this is definitely a taboo at the concert.