Zhangmen Education Inc. is a leading online education company in China. Its core course offerings encompass one-on-one and small-class after-school tutoring services covering all core K-12 academic subjects. It continually enrich its service and product offerings to address students' evolving and diversified educational needs. It began to offer small-class K-12 after-school tutoring services in the third quarter of 2020 to drive and cater to diversified educational goals. Replicating its success in one-on-one tutoring services, its online K-12 small-class after-school tutoring services rapidly became the third largest in China in terms of gross billings in 2020, with the fastest quarter-on-quarter growth among the top 5 players in the industry in terms of gross billings in the fourth quarter of 2020, according to the Frost & Sullivan Report.