China Online Education Group to Report Third Quarter 2018 Financial Results on Monday, December 17, 2018

BEIJING,Dec. 7,2018 -- 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 third quarter 2018 unaudited financial results onMonday,December 17,2018,before the open of U.S. markets.

The Company's management will host an earnings conference call at7:00 AMU.S. Eastern Time onDecember 17,2018(8:00 PMBeijing/Hong Kongtime onDecember 17,2018).

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

United States (toll free):

1-866-264-5888

International:

1-412-317-5226

Hong Kong (toll free):

800-905-945

Hong Kong:

852-3018-4992

China:

400-120-1203

Participants should dial-in at least 5 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 athttp://ir.51talk.com.

A replay of the conference call will be accessible approximately one hour after the conclusion of the live call until December 24,by dialing the following telephone numbers:

United States (toll free):

1-877-344-7529

International:

1-412-317-0088

Replay Access Code:

10126752

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 visithttp://ir.51talk.com.

For investor and media inquiries,please contact:

China Online Education Group

Investor Relations

+86 (10) 5692-8909

ir@51talk.com

The Piacente Group,Inc.

Brandi Piacente

+86 (10) 5730-6200

+1-212-481-2050

51talk@tpg-ir.com

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