Exhibit 99.1

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 all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Class A ordinary shares, par value of $0.00001 per share, of RLX Technology Inc., a Cayman Islands exempted 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 February 7, 2024.

	Ying (Kate) Wang

	/s/ Ying (Kate) Wang

	Leo Valley Holding Limited

	By:	/s/ Ying (Kate) Wang
	Name: Ying (Kate) Wang
	Title: Director

	BJ BJ Limited

	By:	/s/ Ying (Kate) Wang
	Name: Ying (Kate) Wang
	Title: Director

	Long (David) Jiang

	/s/ Long (David) Jiang

	Longtian Holding Limited

	By:	/s/ Long (David) Jiang
	Name: Long (David) Jiang
	Title: Director

	Yilong Wen

	/s/ Yilong Wen

	StarryInv Holding Limited

	By:	/s/ Yilong Wen
	Name: Yilong Wen
	Title: Director

RLX Technology Inc. SC 13G/A