Chen Shuaiping and his granddaughter, Zhang Yuanyuan, perform in a concert held in Xianxiang town's rice paddies. "I never pictured myself playing the cello in the rice paddies and my performance being live online," says Chen Shuaiping, 66, recalling the Field Concert held in Ningbo, Zhejiang province, in May. In the concert, he presented a cello performance with his granddaughter …