Editorial of special issue on OISE major jointly established by Tianjin University and Nankai University

On the occasion of the 20th anniversary of the founding of Chinese Optics Letters,the Optoelectronic Information Science and Engineering(OISE)major,jointly established by Tianjin University and Nankai University,has also reached its twenty-year mark.Based on the guidance of the Ministry of Education(MoE)and with the philosophy of independent education and close cooperation between the two universities.