title: Ji, Xiong, and Yuan reply:.
authors.affiliation: Department of Physics, Shanghai Jiao Tong University, and Shanghai Key Lab for Particle Physics and Cosmology, Shanghai 200240, People's Republic of China.
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Ji
authors.forename: Xiaonu
authors.initials: X
authors.lastname: Xiong
authors.forename: Feng
authors.initials: F
authors.lastname: Yuan