The second report was“domain wall soliton fiber lasers”. In magnetism, a domain wall is an interface separating magnetic domains. It is a transition between different magnetic moments. Domain wall is a gradual reorientation of individual moments across a finite distance. Recently, a phase-locked dark-dark vector soliton was also observed in fiber lasers of positive dispersion, a phase-locked dark-bright vector soliton was obtained in fiber lasers of either positive or negative dispersion. Prof. Tang has made excellent research work in fiber mode locked lasers and published many top quality international journal papers. Prof. Tang showed the generation of domain wall soliton in fibe laser and explained the phenomenon in theory. Prof. Tang patiently answered all questions and looked forward to the fiber laser applications.