Can only one person with a mobile phone number participate in the writing contest?

Only. The registration information for the calligraphy competition shows that the same mobile phone number can only be bound to one contestant, so a mobile phone number can only be registered individually. The calligraphy competition refers to a competition that uses calligraphy works as the main content of the competition, evaluates the calligraphy skills, font style, creative ability and other aspects of the contestants, and finally selects and awards outstanding contestants.