Lailai 100 (the record number of the Ministry of Education is: Jiao Appbei 3 100 188), which was established on 20 14 and belongs to (Shanghai) Information Technology Co., Ltd. (Shanghai high-tech enterprise, double soft enterprise). Focus on the synchronization, accuracy and rigor of homework content, as well as the positioning of big data management. Including English, Chinese, mathematics, physics, chemistry and other subjects, is the teaching and research of all subjects in primary and secondary schools &; Learn to practice &; Evaluation platform.