Exhibit A

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with the other Reporting Person (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Class A ordinary shares, par value of $0.001 per share, of LAIX Inc., a Cayman Islands company, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of August 12, 2021.

Date: August 12, 2021
Yi Wang		/s/ Yi Wang
Joyx Holdings Ltd.	By:	/s/ Yi Wang
		Name: Yi Wang
		Title:   Authorized Signatory
Zheren Hu		/s/ Zheren Hu
Muang Holdings Ltd.	By:	/s/ Zheren Hu
		Name: Zheren Hu
		Title:   Authorized Signatory
Hui Lin		/s/ Hui Lin
Ulingo Holdings Ltd.	By:	/s/ Hui Lin
		Name: Hui Lin
		Title:   Authorized Signatory