Why didn't Deyun Society sign it?

Deyun Society refused to sign the contract on the grounds that the contract was temporarily expired. According to the relevant information inquired, Deyun Society refused to sign the contract on the grounds that the contract was temporarily expired. Deyun Society is one of the most famous large-scale professional crosstalk clubs in China. The full name of Beijing Deyunshe Culture Communication Co., Ltd. was established in 1996. It was once called Beijing Crosstalk Conference, and was renamed Deyun Society in 2003.