The 22nd China (Shenzhen) International Cultural Industries Fair officially opened at the Shenzhen World Exhibition and Convention Center in South China's Guangdong Province on Thursday May 21. Beneath all the excitement, hidden treasures of traditional Chinese arts are quietly thriving at the fair. Let's take a closer look! (Produced by Wang Ruofan, intern Qiu Letao, Chen Hongxin and Zhao Yilin）