Earnings Call Scheduled for 8:00 a.m. EST on March 5, 2021

BEIJING, Feb. 27, 2021 — China Online Education Group ("51Talk", or the "Company") (NYSE: COE), a leading online education platform in China, with core expertise in English education, today announced that it will report its fourth quarter 2020 unaudited financial results on Friday, March 5, 2021, before the open of U.S. markets.

The Company’s management will host an earnings conference call at 8:00 a.m. U.S. Eastern Time on March 5, 2021 (9:00 p.m. Beijing/Hong Kong time on March 5, 2021).

Dial-in details for the earnings conference call are as follows:

Participants should dial-in at least 10 minutes before the scheduled start time and ask to be connected to the call for "China Online Education Group."

Additionally, a live and archived webcast of the conference call will be available on the Company’s investor relations website at http://ir.51talk.com.

A replay of the conference call will be accessible approximately one hour after the conclusion of the live call until March 12, 2021, by dialing the following telephone numbers:

About China Online Education Group

China Online Education Group (NYSE: COE) is a leading online education platform in China, with core expertise in English education. The Company’s mission is to make quality education accessible and affordable. The Company’s online and mobile education platforms enable students across China to take live interactive English lessons with overseas foreign teachers, on demand. The Company connects its students with a large pool of highly qualified foreign teachers that it assembled using a shared economy approach, and employs student and teacher feedback and data analytics to deliver a personalized learning experience to its students.

For more information, please visit http://ir.51talk.com.