Zhihu Inc is a company principally engaged in the operation of the online content community and providing paid membership services, marketing services and vocational training. The Company’s paid membership services mainly provide subscription members’ access right to premium content, such as audio books and radio plays. The Company’s marketing services include advertising services and content-commerce solution services. The Company’s vocational training includes practical training courses focusing on acquisition of specific skills, professional qualification exam preparation courses, vocational language exam preparation courses, and other vocational training courses. The Company mainly conducts its business in the domestic market.