China Online Education Group to Report First Quarter, 2022 Financial Results on Friday, June 24, 2022

Earnings Call Scheduled for 8:00 a.m. ET on June 24,2022

BEIJING,June 22,2022 --China Online Education Group ("51Talk",or the "Company") (NYSE: COE),a leading online education platform inChina,with core expertise in English education,today announced that it will report its unaudited financial results for the first quarter ended March 31,2022 onFriday,June 24,2022,before the open of U.S. markets.

The Company's management will host an earnings conference call at8:00 a.m.U.S. Eastern Time onJune 24,2022 (8:00 p.m.Beijing/Hong Kongtime onJune 24,2022).

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

United States Toll:

+1-866-264-5888

International:

+1-412-317-5226

Mainland China Toll:

400-120-1203

Hong Kong Toll:

800-905-945

Hong Kong-Local Toll:

+852-3018-4992

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 July 1,by dialing the following telephone numbers:

United States Toll:

+1-877-344-7529

International Toll:

+1-412-317-0088

Replay Access Code:

9842103

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 to take live interactive English lessons on demand. The Company connects its students with a large pool of highly qualified 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.

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