There is no namesake in Tianyan. According to Baidu Encyclopedia, the main function of Tianyan Search is to provide professional enterprise information query and enterprise relationship mining services. Tianyuecha provides users with search and query functions. The main information includes: industrial and commercial information, litigation-related information, trademark patents, untrustworthy information, enterprise change and annual report, and enterprise relationship inquiry. Tianyancha has realized the integration of all industrial and commercial data, trademark data and public interest litigation data, as well as the deep excavation of corporate relations. Therefore, Tianyan search does not have the function of searching for the same name and surname.